2 * Copyright (c) 1980, 1987, 1988, 1991, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#)login.c 8.4 (Berkeley) 4/2/94
34 * $FreeBSD: src/usr.bin/login/login.c,v 1.51.2.15 2003/04/29 14:10:41 des Exp $
35 * $DragonFly: src/usr.bin/login/login.c,v 1.2 2003/06/17 04:29:28 dillon Exp $
39 static char copyright[] =
40 "@(#) Copyright (c) 1980, 1987, 1988, 1991, 1993, 1994\n\
41 The Regents of the University of California. All rights reserved.\n";
46 * login -h hostname (for telnetd, etc.)
47 * login -f name (for pre-authenticated login: datakit, xterm, etc.)
50 #include <sys/copyright.h>
51 #include <sys/param.h>
53 #include <sys/socket.h>
55 #include <sys/resource.h>
57 #include <netinet/in.h>
58 #include <arpa/inet.h>
64 #include <login_cap.h>
78 #include <security/pam_appl.h>
79 #include <security/pam_misc.h>
83 #include "pathnames.h"
85 /* wrapper for KAME-special getnameinfo() */
86 #ifndef NI_WITHSCOPEID
87 #define NI_WITHSCOPEID 0
90 void badlogin __P((char *));
91 void checknologin __P((void));
92 void dolastlog __P((int));
93 void getloginname __P((void));
94 void motd __P((char *));
95 int rootterm __P((char *));
96 void sigint __P((int));
97 void sleepexit __P((int));
98 void refused __P((char *,char *,int));
99 char *stypeof __P((char *));
100 void timedout __P((int));
101 int login_access __P((char *, char *));
102 void login_fbtab __P((char *, uid_t, gid_t));
105 static int auth_pam __P((void));
106 static int export_pam_environment __P((void));
107 static int ok_to_export __P((const char *));
109 static pam_handle_t *pamh = NULL;
110 static char **environ_pam;
113 if ((e = pam_setcred(pamh, PAM_DELETE_CRED)) != PAM_SUCCESS) \
114 syslog(LOG_ERR, "pam_setcred: %s", pam_strerror(pamh, e)); \
115 if ((e = pam_close_session(pamh,0)) != PAM_SUCCESS) \
116 syslog(LOG_ERR, "pam_close_session: %s", pam_strerror(pamh, e)); \
117 if ((e = pam_end(pamh, e)) != PAM_SUCCESS) \
118 syslog(LOG_ERR, "pam_end: %s", pam_strerror(pamh, e)); \
121 static int auth_traditional __P((void));
122 extern void login __P((struct utmp *));
123 static void usage __P((void));
125 #define TTYGRPNAME "tty" /* name of group to own ttys */
126 #define DEFAULT_BACKOFF 3
127 #define DEFAULT_RETRIES 10
128 #define DEFAULT_PROMPT "login: "
129 #define DEFAULT_PASSWD_PROMPT "Password:"
132 * This bounds the time given to login. Not a define so it can
133 * be patched on machines where it's too small.
137 /* Buffer for signal handling of timeout */
142 char *term, *envinit[1], *hostname, *passwd_prompt, *prompt, *tty, *username;
143 char full_hostname[MAXHOSTNAMELEN];
150 extern char **environ;
155 int rootok, retries, backoff;
156 int ask, ch, cnt, fflag, hflag, pflag, quietlog, rootlogin, rval;
162 char tbuf[MAXPATHLEN + 2];
163 char tname[sizeof(_PATH_TTY) + 10];
165 login_cap_t *lc = NULL;
171 (void)signal(SIGQUIT, SIG_IGN);
172 (void)signal(SIGINT, SIG_IGN);
173 (void)signal(SIGHUP, SIG_IGN);
174 if (setjmp(timeout_buf)) {
177 (void)fprintf(stderr, "Login timed out after %d seconds\n",
181 (void)signal(SIGALRM, timedout);
182 (void)alarm(timeout);
183 (void)setpriority(PRIO_PROCESS, 0, 0);
185 openlog("login", LOG_ODELAY, LOG_AUTH);
188 * -p is used by getty to tell login not to destroy the environment
189 * -f is used to skip a second login authentication
190 * -h is used by other servers to pass the name of the remote
191 * host to login so that it may be placed in utmp and wtmp
193 *full_hostname = '\0';
196 fflag = hflag = pflag = 0;
200 while ((ch = getopt(argc, argv, "fh:p")) != -1)
207 errx(1, "-h option: %s", strerror(EPERM));
209 if (strlcpy(full_hostname, optarg,
210 sizeof(full_hostname)) >= sizeof(full_hostname))
211 errx(1, "-h option: %s: exceeds maximum "
212 "hostname size", optarg);
214 trimdomain(optarg, UT_HOSTSIZE);
216 if (strlen(optarg) > UT_HOSTSIZE) {
217 struct addrinfo hints, *res;
220 memset(&hints, 0, sizeof(hints));
221 hints.ai_family = AF_UNSPEC;
222 ga_err = getaddrinfo(optarg, NULL, &hints,
225 char hostbuf[MAXHOSTNAMELEN];
227 getnameinfo(res->ai_addr,
230 sizeof(hostbuf), NULL, 0,
233 optarg = strdup(hostbuf);
234 if (optarg == NULL) {
240 optarg = "invalid hostname";
252 syslog(LOG_ERR, "invalid flag %c", ch);
264 setproctitle("-%s", getprogname());
266 for (cnt = getdtablesize(); cnt > 2; cnt--)
269 ttyn = ttyname(STDIN_FILENO);
270 if (ttyn == NULL || *ttyn == '\0') {
271 (void)snprintf(tname, sizeof(tname), "%s??", _PATH_TTY);
274 if ((tty = strrchr(ttyn, '/')) != NULL)
280 * Get "login-retries" & "login-backoff" from default class
282 lc = login_getclass(NULL);
283 prompt = login_getcapstr(lc, "login_prompt",
284 DEFAULT_PROMPT, DEFAULT_PROMPT);
285 passwd_prompt = login_getcapstr(lc, "passwd_prompt",
286 DEFAULT_PASSWD_PROMPT, DEFAULT_PASSWD_PROMPT);
287 retries = login_getcapnum(lc, "login-retries", DEFAULT_RETRIES,
289 backoff = login_getcapnum(lc, "login-backoff", DEFAULT_BACKOFF,
294 for (cnt = 0;; ask = 1) {
300 rootok = rootterm(tty); /* Default (auth may change) */
302 if (strlen(username) > UT_NAMESIZE)
303 username[UT_NAMESIZE] = '\0';
306 * Note if trying multiple user names; log failures for
307 * previous user name, but don't bother logging one failure
308 * for nonexistent name (mistyped username).
310 if (failures && strcmp(tbuf, username)) {
311 if (failures > (pwd ? 0 : 1))
314 (void)strlcpy(tbuf, username, sizeof(tbuf));
316 pwd = getpwnam(username);
319 * if we have a valid account name, and it doesn't have a
320 * password, or the -f option was specified and the caller
321 * is root or the caller isn't changing their uid, don't
325 if (pwd->pw_uid == 0)
328 if (fflag && (uid == (uid_t)0 ||
329 uid == (uid_t)pwd->pw_uid)) {
330 /* already authenticated */
332 } else if (pwd->pw_passwd[0] == '\0') {
333 if (!rootlogin || rootok) {
334 /* pretend password okay */
343 (void)setpriority(PRIO_PROCESS, 0, -4);
347 * Try to authenticate using PAM. If a PAM system error
348 * occurs, perhaps because of a botched configuration,
349 * then fall back to using traditional Unix authentication.
351 if ((rval = auth_pam()) == -1)
353 rval = auth_traditional();
355 (void)setpriority(PRIO_PROCESS, 0, 0);
359 * PAM authentication may have changed "pwd" to the
360 * entry for the template user. Check again to see if
361 * this is a root login after all.
363 if (pwd != NULL && pwd->pw_uid == 0)
369 * If trying to log in as root without Kerberos,
370 * but with insecure terminal, refuse the login attempt.
373 if (rootlogin && !rootok)
374 refused(NULL, "NOROOT", 0);
375 else /* valid password & authenticated */
379 (void)printf("Login incorrect\n");
383 * we allow up to 'retry' (10) tries,
384 * but after 'backoff' (3) we start backing off
386 if (++cnt > backoff) {
387 if (cnt >= retries) {
391 sleep((u_int)((cnt - backoff) * 5));
395 /* committed to login -- turn off timeout */
396 (void)alarm((u_int)0);
397 (void)signal(SIGHUP, SIG_DFL);
402 * Establish the login class.
404 lc = login_getpwclass(pwd);
406 /* if user not super-user, check for disabled logins */
408 auth_checknologin(lc);
410 quietlog = login_getcapbool(lc, "hushlogin", 0);
411 /* Switching needed for NFS with root access disabled */
412 (void)setegid(pwd->pw_gid);
413 (void)seteuid(rootlogin ? 0 : pwd->pw_uid);
414 if (!*pwd->pw_dir || chdir(pwd->pw_dir) < 0) {
415 if (login_getcapbool(lc, "requirehome", 0))
416 refused("Home directory not available", "HOMEDIR", 1);
418 refused("Cannot find root directory", "ROOTDIR", 1);
419 if (!quietlog || *pwd->pw_dir)
420 printf("No home directory.\nLogging in with home = \"/\".\n");
426 quietlog = access(_PATH_HUSHLOGIN, F_OK) == 0;
428 if (pwd->pw_change || pwd->pw_expire)
429 (void)gettimeofday(&tp, (struct timezone *)NULL);
431 #define DEFAULT_WARN (2L * 7L * 86400L) /* Two weeks */
433 warntime = login_getcaptime(lc, "warnexpire", DEFAULT_WARN,
436 if (pwd->pw_expire) {
437 if (tp.tv_sec >= pwd->pw_expire) {
438 refused("Sorry -- your account has expired", "EXPIRED",
440 } else if (pwd->pw_expire - tp.tv_sec < warntime && !quietlog)
441 (void)printf("Warning: your account expires on %s",
442 ctime(&pwd->pw_expire));
445 warntime = login_getcaptime(lc, "warnpassword", DEFAULT_WARN,
449 if (pwd->pw_change) {
450 if (tp.tv_sec >= pwd->pw_change) {
451 (void)printf("Sorry -- your password has expired.\n");
453 syslog(LOG_INFO, "%s Password expired - forcing change",
455 } else if (pwd->pw_change - tp.tv_sec < warntime && !quietlog)
456 (void)printf("Warning: your password expires on %s",
457 ctime(&pwd->pw_change));
462 struct addrinfo hints, *res;
465 memset(&hints, 0, sizeof(hints));
466 hints.ai_family = AF_UNSPEC;
467 ga_err = getaddrinfo(full_hostname, NULL, &hints,
470 char hostbuf[MAXHOSTNAMELEN];
472 getnameinfo(res->ai_addr, res->ai_addrlen,
473 hostbuf, sizeof(hostbuf), NULL, 0,
474 NI_NUMERICHOST|NI_WITHSCOPEID);
475 if ((optarg = strdup(hostbuf)) == NULL) {
476 syslog(LOG_NOTICE, "strdup(): %m");
483 if (!auth_hostok(lc, full_hostname, optarg))
484 refused("Permission denied", "HOST", 1);
487 if (!auth_ttyok(lc, tty))
488 refused("Permission denied", "TTY", 1);
490 if (!auth_timeok(lc, time(NULL)))
491 refused("Logins not available right now", "TIME", 1);
493 shell = login_getcapstr(lc, "shell", pwd->pw_shell, pwd->pw_shell);
494 if (*pwd->pw_shell == '\0')
495 pwd->pw_shell = _PATH_BSHELL;
496 if (*shell == '\0') /* Not overridden */
497 shell = pwd->pw_shell;
498 if ((shell = strdup(shell)) == NULL) {
499 syslog(LOG_NOTICE, "strdup(): %m");
504 if (login_access(pwd->pw_name, hostname ? full_hostname : tty) == 0)
505 refused("Permission denied", "ACCESS", 1);
506 #endif /* LOGIN_ACCESS */
508 /* Nothing else left to fail -- really log in. */
509 memset((void *)&utmp, 0, sizeof(utmp));
510 (void)time(&utmp.ut_time);
511 (void)strncpy(utmp.ut_name, username, sizeof(utmp.ut_name));
513 (void)strncpy(utmp.ut_host, hostname, sizeof(utmp.ut_host));
514 (void)strncpy(utmp.ut_line, tty, sizeof(utmp.ut_line));
520 * Set device protections, depending on what terminal the
521 * user is logged in. This feature is used on Suns to give
522 * console users better privacy.
524 login_fbtab(tty, pwd->pw_uid, pwd->pw_gid);
527 * Clear flags of the tty. None should be set, and when the
528 * user sets them otherwise, this can cause the chown to fail.
529 * Since it isn't clear that flags are useful on character
530 * devices, we just clear them.
532 if (ttyn != tname && chflags(ttyn, 0) && errno != EOPNOTSUPP)
533 syslog(LOG_ERR, "chflags(%s): %m", ttyn);
534 if (ttyn != tname && chown(ttyn, pwd->pw_uid,
535 (gr = getgrnam(TTYGRPNAME)) ? gr->gr_gid : pwd->pw_gid))
536 syslog(LOG_ERR, "chmod(%s): %m", ttyn);
540 * Preserve TERM if it happens to be already set.
542 if ((term = getenv("TERM")) != NULL) {
543 if ((term = strdup(term)) == NULL) {
551 * Exclude cons/vt/ptys only, assume dialup otherwise
552 * TODO: Make dialup tty determination a library call
553 * for consistency (finger etc.)
555 if (hostname==NULL && isdialuptty(tty))
556 syslog(LOG_INFO, "DIALUP %s, %s", tty, pwd->pw_name);
560 * Syslog each successful login, so we don't have to watch hundreds
561 * of wtmp or lastlogin files.
564 syslog(LOG_INFO, "login from %s on %s as %s",
565 full_hostname, tty, pwd->pw_name);
567 syslog(LOG_INFO, "login on %s as %s",
572 * If fflag is on, assume caller/authenticator has logged root login.
574 if (rootlogin && fflag == 0)
577 syslog(LOG_NOTICE, "ROOT LOGIN (%s) ON %s FROM %s",
578 username, tty, full_hostname);
580 syslog(LOG_NOTICE, "ROOT LOGIN (%s) ON %s",
585 * Destroy environment unless user has requested its preservation.
586 * We need to do this before setusercontext() because that may
587 * set or reset some environment variables.
593 * PAM modules might add supplementary groups during pam_setcred().
595 if (setusercontext(lc, pwd, pwd->pw_uid, LOGIN_SETGROUP) != 0) {
596 syslog(LOG_ERR, "setusercontext() failed - exiting");
602 if ((e = pam_open_session(pamh, 0)) != PAM_SUCCESS) {
603 syslog(LOG_ERR, "pam_open_session: %s",
604 pam_strerror(pamh, e));
605 } else if ((e = pam_setcred(pamh, PAM_ESTABLISH_CRED))
607 syslog(LOG_ERR, "pam_setcred: %s",
608 pam_strerror(pamh, e));
612 * Add any environmental variables that the
613 * PAM modules may have set.
614 * Call *after* opening session!
617 environ_pam = pam_getenvlist(pamh);
619 export_pam_environment();
623 * We must fork() before setuid() because we need to call
624 * pam_close_session() as root.
632 /* parent - wait for child to finish, then cleanup
634 setproctitle("-%s [pam]", getprogname());
639 if ((e = pam_end(pamh, PAM_DATA_SILENT)) != PAM_SUCCESS)
640 syslog(LOG_ERR, "pam_end: %s",
641 pam_strerror(pamh, e));
647 * We don't need to be root anymore, so
648 * set the user and session context
650 if (setlogin(username) != 0) {
651 syslog(LOG_ERR, "setlogin(%s): %m - exiting", username);
654 if (setusercontext(lc, pwd, pwd->pw_uid,
655 LOGIN_SETALL & ~(LOGIN_SETLOGIN|LOGIN_SETGROUP)) != 0) {
656 syslog(LOG_ERR, "setusercontext() failed - exiting");
660 (void)setenv("SHELL", pwd->pw_shell, 1);
661 (void)setenv("HOME", pwd->pw_dir, 1);
662 if (term != NULL && *term != '\0')
663 (void)setenv("TERM", term, 1); /* Preset overrides */
665 (void)setenv("TERM", stypeof(tty), 0); /* Fallback doesn't */
667 (void)setenv("LOGNAME", username, 1);
668 (void)setenv("USER", username, 1);
669 (void)setenv("PATH", rootlogin ? _PATH_STDPATH : _PATH_DEFPATH, 0);
674 cw = login_getcapstr(lc, "copyright", NULL, NULL);
675 if (cw != NULL && access(cw, F_OK) == 0)
678 (void)printf("%s\n\t%s %s\n",
679 "Copyright (c) 1980, 1983, 1986, 1988, 1990, 1991, 1993, 1994",
680 "The Regents of the University of California. ",
681 "All rights reserved.");
685 cw = login_getcapstr(lc, "welcome", NULL, NULL);
686 if (cw == NULL || access(cw, F_OK) != 0)
690 cw = getenv("MAIL"); /* $MAIL may have been set by class */
692 strlcpy(tbuf, cw, sizeof(tbuf));
694 snprintf(tbuf, sizeof(tbuf), "%s/%s", _PATH_MAILDIR,
696 if (stat(tbuf, &st) == 0 && st.st_size != 0)
697 (void)printf("You have %smail.\n",
698 (st.st_mtime > st.st_atime) ? "new " : "");
703 (void)signal(SIGALRM, SIG_DFL);
704 (void)signal(SIGQUIT, SIG_DFL);
705 (void)signal(SIGINT, SIG_DFL);
706 (void)signal(SIGTSTP, SIG_IGN);
709 if (system(_PATH_CHPASS) != 0)
714 * Login shells have a leading '-' in front of argv[0]
716 if (snprintf(tbuf, sizeof(tbuf), "-%s",
717 (p = strrchr(pwd->pw_shell, '/')) ? p + 1 : pwd->pw_shell) >=
719 syslog(LOG_ERR, "user: %s: shell exceeds maximum pathname size",
721 errx(1, "shell exceeds maximum pathname size");
724 execlp(shell, tbuf, (char *)0);
737 salt = pwd != NULL ? pwd->pw_passwd : "xx";
739 p = getpass(passwd_prompt);
743 if (!p[0] && pwd->pw_passwd[0])
745 if (strcmp(ep, pwd->pw_passwd) == 0)
749 /* clear entered password */
750 memset(p, 0, strlen(p));
756 * Attempt to authenticate the user using PAM. Returns 0 if the user is
757 * authenticated, or 1 if not authenticated. If some sort of PAM system
758 * error occurs (e.g., the "/etc/pam.conf" file is missing) then this
759 * function returns -1. This can be used as an indication that we should
760 * fall back to a different authentication mechanism.
765 const char *tmpl_user;
769 static struct pam_conv conv = { misc_conv, NULL };
771 if ((e = pam_start("login", username, &conv, &pamh)) != PAM_SUCCESS) {
772 syslog(LOG_ERR, "pam_start: %s", pam_strerror(pamh, e));
775 if ((e = pam_set_item(pamh, PAM_TTY, tty)) != PAM_SUCCESS) {
776 syslog(LOG_ERR, "pam_set_item(PAM_TTY): %s",
777 pam_strerror(pamh, e));
780 if (hostname != NULL &&
781 (e = pam_set_item(pamh, PAM_RHOST, full_hostname)) != PAM_SUCCESS) {
782 syslog(LOG_ERR, "pam_set_item(PAM_RHOST): %s",
783 pam_strerror(pamh, e));
786 e = pam_authenticate(pamh, 0);
791 * With PAM we support the concept of a "template"
792 * user. The user enters a login name which is
793 * authenticated by PAM, usually via a remote service
794 * such as RADIUS or TACACS+. If authentication
795 * succeeds, a different but related "template" name
796 * is used for setting the credentials, shell, and
797 * home directory. The name the user enters need only
798 * exist on the remote authentication server, but the
799 * template name must be present in the local password
802 * This is supported by two various mechanisms in the
803 * individual modules. However, from the application's
804 * point of view, the template user is always passed
805 * back as a changed value of the PAM_USER item.
807 if ((e = pam_get_item(pamh, PAM_USER, &item)) ==
809 tmpl_user = (const char *) item;
810 if (strcmp(username, tmpl_user) != 0)
811 pwd = getpwnam(tmpl_user);
813 syslog(LOG_ERR, "Couldn't get PAM_USER: %s",
814 pam_strerror(pamh, e));
819 case PAM_USER_UNKNOWN:
825 syslog(LOG_ERR, "pam_authenticate: %s", pam_strerror(pamh, e));
831 e = pam_acct_mgmt(pamh, 0);
832 if (e == PAM_NEW_AUTHTOK_REQD) {
833 e = pam_chauthtok(pamh, PAM_CHANGE_EXPIRED_AUTHTOK);
834 if (e != PAM_SUCCESS) {
835 syslog(LOG_ERR, "pam_chauthtok: %s",
836 pam_strerror(pamh, e));
839 } else if (e != PAM_SUCCESS) {
845 if ((e = pam_end(pamh, e)) != PAM_SUCCESS) {
846 syslog(LOG_ERR, "pam_end: %s", pam_strerror(pamh, e));
854 export_pam_environment()
858 for (pp = environ_pam; *pp != NULL; pp++) {
859 if (ok_to_export(*pp))
867 * Sanity checks on PAM environmental variables:
868 * - Make sure there is an '=' in the string.
869 * - Make sure the string doesn't run on too long.
870 * - Do not export certain variables. This list was taken from the
871 * Solaris pam_putenv(3) man page.
877 static const char *noexport[] = {
878 "SHELL", "HOME", "LOGNAME", "MAIL", "CDPATH",
884 if (strlen(s) > 1024 || strchr(s, '=') == NULL)
886 if (strncmp(s, "LD_", 3) == 0)
888 for (pp = noexport; *pp != NULL; pp++) {
890 if (s[n] == '=' && strncmp(s, *pp, n) == 0)
901 (void)fprintf(stderr, "usage: login [-fp] [-h hostname] [username]\n");
906 * Allow for authentication style and/or kerberos instance
909 #define NBUFSIZ UT_NAMESIZE + 64
916 static char nbuf[NBUFSIZ];
919 (void)printf("%s", prompt);
920 for (p = nbuf; (ch = getchar()) != '\n'; ) {
925 if (p < nbuf + (NBUFSIZ - 1))
930 (void)fprintf(stderr,
931 "login names may not start with '-'.\n");
947 return ((t = getttynam(ttyn)) && t->ty_status & TTY_SECURE);
950 volatile int motdinterrupt;
967 if ((fd = open(motdfile, O_RDONLY, 0)) < 0)
970 oldint = signal(SIGINT, sigint);
971 while ((nchars = read(fd, tbuf, sizeof(tbuf))) > 0 && !motdinterrupt)
972 (void)write(fileno(stdout), tbuf, nchars);
973 (void)signal(SIGINT, oldint);
983 longjmp(timeout_buf, signo);
994 if ((fd = open(_PATH_LASTLOG, O_RDWR, 0)) >= 0) {
995 (void)lseek(fd, (off_t)pwd->pw_uid * sizeof(ll), L_SET);
997 if (read(fd, (char *)&ll, sizeof(ll)) == sizeof(ll) &&
999 (void)printf("Last login: %.*s ",
1000 24-5, (char *)ctime(&ll.ll_time));
1001 if (*ll.ll_host != '\0')
1002 (void)printf("from %.*s\n",
1003 (int)sizeof(ll.ll_host),
1006 (void)printf("on %.*s\n",
1007 (int)sizeof(ll.ll_line),
1010 (void)lseek(fd, (off_t)pwd->pw_uid * sizeof(ll), L_SET);
1012 memset((void *)&ll, 0, sizeof(ll));
1013 (void)time(&ll.ll_time);
1014 (void)strncpy(ll.ll_line, tty, sizeof(ll.ll_line));
1016 (void)strncpy(ll.ll_host, hostname, sizeof(ll.ll_host));
1017 (void)write(fd, (char *)&ll, sizeof(ll));
1020 syslog(LOG_ERR, "cannot open %s: %m", _PATH_LASTLOG);
1032 syslog(LOG_NOTICE, "%d LOGIN FAILURE%s FROM %s",
1033 failures, failures > 1 ? "S" : "", full_hostname);
1034 syslog(LOG_AUTHPRIV|LOG_NOTICE,
1035 "%d LOGIN FAILURE%s FROM %s, %s",
1036 failures, failures > 1 ? "S" : "", full_hostname, name);
1038 syslog(LOG_NOTICE, "%d LOGIN FAILURE%s ON %s",
1039 failures, failures > 1 ? "S" : "", tty);
1040 syslog(LOG_AUTHPRIV|LOG_NOTICE,
1041 "%d LOGIN FAILURE%s ON %s, %s",
1042 failures, failures > 1 ? "S" : "", tty, name);
1048 #define UNKNOWN "su"
1056 if (ttyid != NULL && *ttyid != '\0') {
1057 t = getttynam(ttyid);
1058 if (t != NULL && t->ty_type != NULL)
1059 return (t->ty_type);
1065 refused(msg, rtype, lout)
1072 printf("%s.\n", msg);
1074 syslog(LOG_NOTICE, "LOGIN %s REFUSED (%s) FROM %s ON TTY %s",
1075 pwd->pw_name, rtype, full_hostname, tty);
1077 syslog(LOG_NOTICE, "LOGIN %s REFUSED (%s) ON TTY %s",
1078 pwd->pw_name, rtype, tty);