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
35 static char copyright[] =
36 "@(#) Copyright (c) 1980, 1987, 1988, 1991, 1993, 1994\n\
37 The Regents of the University of California. All rights reserved.\n";
42 static char sccsid[] = "@(#)login.c 8.4 (Berkeley) 4/2/94";
44 static const char rcsid[] =
50 * login -h hostname (for telnetd, etc.)
51 * login -f name (for pre-authenticated login: datakit, xterm, etc.)
54 #include <sys/copyright.h>
55 #include <sys/param.h>
57 #include <sys/socket.h>
59 #include <sys/resource.h>
61 #include <netinet/in.h>
62 #include <arpa/inet.h>
68 #include <login_cap.h>
82 #include <security/pam_appl.h>
83 #include <security/openpam.h>
87 #include "pathnames.h"
89 void badlogin(char *);
90 void checknologin(void);
92 void getloginname(void);
93 void motd(const char *);
97 void refused(char *,char *,int);
98 char *stypeof(char *);
100 int login_access(char *, char *);
101 void login_fbtab(char *, uid_t, gid_t);
104 static int auth_pam(void);
105 static int export_pam_environment(void);
106 static int ok_to_export(const char *);
108 static pam_handle_t *pamh = NULL;
109 static char **environ_pam;
112 if ((e = pam_setcred(pamh, PAM_DELETE_CRED)) != PAM_SUCCESS) \
113 syslog(LOG_ERR, "pam_setcred: %s", pam_strerror(pamh, e)); \
114 if ((e = pam_close_session(pamh,0)) != PAM_SUCCESS) \
115 syslog(LOG_ERR, "pam_close_session: %s", pam_strerror(pamh, e)); \
116 if ((e = pam_end(pamh, e)) != PAM_SUCCESS) \
117 syslog(LOG_ERR, "pam_end: %s", pam_strerror(pamh, e)); \
121 static int auth_traditional(void);
122 static void usage(void);
124 #define TTYGRPNAME "tty" /* name of group to own ttys */
125 #define DEFAULT_BACKOFF 3
126 #define DEFAULT_RETRIES 10
127 #define DEFAULT_PROMPT "login: "
128 #define DEFAULT_PASSWD_PROMPT "Password:"
131 * This bounds the time given to login. Not a define so it can
132 * be patched on machines where it's too small.
136 /* Buffer for signal handling of timeout */
141 char *term, *envinit[1], *hostname, *tty, *username;
142 const char *passwd_prompt, *prompt;
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];
164 const char *shell = NULL;
165 login_cap_t *lc = NULL;
166 int UT_HOSTSIZE = sizeof(utmp.ut_host);
167 int UT_NAMESIZE = sizeof(utmp.ut_user);
173 (void)signal(SIGQUIT, SIG_IGN);
174 (void)signal(SIGINT, SIG_IGN);
175 (void)signal(SIGHUP, SIG_IGN);
176 if (setjmp(timeout_buf)) {
179 (void)fprintf(stderr, "Login timed out after %d seconds\n",
183 (void)signal(SIGALRM, timedout);
184 (void)alarm(timeout);
185 (void)setpriority(PRIO_PROCESS, 0, 0);
187 openlog("login", LOG_ODELAY, LOG_AUTH);
190 * -p is used by getty to tell login not to destroy the environment
191 * -f is used to skip a second login authentication
192 * -h is used by other servers to pass the name of the remote
193 * host to login so that it may be placed in utmp and wtmp
195 *full_hostname = '\0';
198 fflag = hflag = pflag = 0;
202 while ((ch = getopt(argc, argv, "fh:p")) != -1)
209 errx(1, "-h option: %s", strerror(EPERM));
211 if (strlcpy(full_hostname, optarg,
212 sizeof(full_hostname)) >= sizeof(full_hostname))
213 errx(1, "-h option: %s: exceeds maximum "
214 "hostname size", optarg);
216 trimdomain(optarg, UT_HOSTSIZE);
218 if (strlen(optarg) > UT_HOSTSIZE) {
219 struct addrinfo hints, *res;
222 memset(&hints, 0, sizeof(hints));
223 hints.ai_family = AF_UNSPEC;
224 ga_err = getaddrinfo(optarg, NULL, &hints,
227 char hostbuf[MAXHOSTNAMELEN];
229 getnameinfo(res->ai_addr,
232 sizeof(hostbuf), NULL, 0,
234 optarg = strdup(hostbuf);
235 if (optarg == NULL) {
241 optarg = "invalid hostname";
253 syslog(LOG_ERR, "invalid flag %c", ch);
265 for (cnt = getdtablesize(); cnt > 2; cnt--)
268 ttyn = ttyname(STDIN_FILENO);
269 if (ttyn == NULL || *ttyn == '\0') {
270 (void)snprintf(tname, sizeof(tname), "%s??", _PATH_TTY);
273 if ((tty = strrchr(ttyn, '/')) != NULL)
279 * Get "login-retries" & "login-backoff" from default class
281 lc = login_getclass(NULL);
282 prompt = login_getcapstr(lc, "login_prompt",
283 DEFAULT_PROMPT, DEFAULT_PROMPT);
284 passwd_prompt = login_getcapstr(lc, "passwd_prompt",
285 DEFAULT_PASSWD_PROMPT, DEFAULT_PASSWD_PROMPT);
286 retries = login_getcapnum(lc, "login-retries", DEFAULT_RETRIES,
288 backoff = login_getcapnum(lc, "login-backoff", DEFAULT_BACKOFF,
293 for (cnt = 0;; ask = 1) {
299 rootok = rootterm(tty); /* Default (auth may change) */
301 if (strlen(username) > UT_NAMESIZE)
302 username[UT_NAMESIZE] = '\0';
305 * Note if trying multiple user names; log failures for
306 * previous user name, but don't bother logging one failure
307 * for nonexistent name (mistyped username).
309 if (failures && strcmp(tbuf, username)) {
310 if (failures > (pwd ? 0 : 1))
313 (void)strlcpy(tbuf, username, sizeof(tbuf));
315 pwd = getpwnam(username);
318 * if we have a valid account name, and it doesn't have a
319 * password, or the -f option was specified and the caller
320 * is root or the caller isn't changing their uid, don't
324 if (pwd->pw_uid == 0)
327 if (fflag && (uid == (uid_t)0 ||
328 uid == (uid_t)pwd->pw_uid)) {
329 /* already authenticated */
331 } else if (pwd->pw_passwd[0] == '\0') {
332 if (!rootlogin || rootok) {
333 /* pretend password okay */
342 (void)setpriority(PRIO_PROCESS, 0, -4);
346 * Try to authenticate using PAM. If a PAM system error
347 * occurs, perhaps because of a botched configuration,
348 * then fall back to using traditional Unix authentication.
350 if ((rval = auth_pam()) == -1)
352 rval = auth_traditional();
354 (void)setpriority(PRIO_PROCESS, 0, 0);
358 * PAM authentication may have changed "pwd" to the
359 * entry for the template user. Check again to see if
360 * this is a root login after all.
362 if (pwd != NULL && pwd->pw_uid == 0)
368 * If trying to log in as root without Kerberos,
369 * but with insecure terminal, refuse the login attempt.
372 if (rootlogin && !rootok)
373 refused(NULL, "NOROOT", 0);
374 else /* valid password & authenticated */
378 (void)printf("Login incorrect\n");
382 * we allow up to 'retry' (10) tries,
383 * but after 'backoff' (3) we start backing off
385 if (++cnt > backoff) {
386 if (cnt >= retries) {
390 sleep((u_int)((cnt - backoff) * 5));
394 /* committed to login -- turn off timeout */
395 (void)alarm((u_int)0);
396 (void)signal(SIGHUP, SIG_DFL);
401 * Establish the login class.
403 lc = login_getpwclass(pwd);
405 /* if user not super-user, check for disabled logins */
407 auth_checknologin(lc);
409 quietlog = login_getcapbool(lc, "hushlogin", 0);
411 * Switching needed for NFS with root access disabled.
413 * XXX: This change fails to modify the additional groups for the
414 * process, and as such, may restrict rights normally granted
415 * through those groups.
417 (void)setegid(pwd->pw_gid);
418 (void)seteuid(rootlogin ? 0 : pwd->pw_uid);
419 if (!*pwd->pw_dir || chdir(pwd->pw_dir) < 0) {
420 if (login_getcapbool(lc, "requirehome", 0))
421 refused("Home directory not available", "HOMEDIR", 1);
423 refused("Cannot find root directory", "ROOTDIR", 1);
424 if (!quietlog || *pwd->pw_dir)
425 printf("No home directory.\nLogging in with home = \"/\".\n");
431 quietlog = access(_PATH_HUSHLOGIN, F_OK) == 0;
433 if (pwd->pw_change || pwd->pw_expire)
434 (void)gettimeofday(&tp, (struct timezone *)NULL);
436 #define DEFAULT_WARN (2L * 7L * 86400L) /* Two weeks */
438 warntime = login_getcaptime(lc, "warnexpire", DEFAULT_WARN,
441 if (pwd->pw_expire) {
442 if (tp.tv_sec >= pwd->pw_expire) {
443 refused("Sorry -- your account has expired", "EXPIRED",
445 } else if (pwd->pw_expire - tp.tv_sec < warntime && !quietlog)
446 (void)printf("Warning: your account expires on %s",
447 ctime(&pwd->pw_expire));
450 warntime = login_getcaptime(lc, "warnpassword", DEFAULT_WARN,
454 if (pwd->pw_change) {
455 if (tp.tv_sec >= pwd->pw_change) {
456 (void)printf("Sorry -- your password has expired.\n");
458 syslog(LOG_INFO, "%s Password expired - forcing change",
460 } else if (pwd->pw_change - tp.tv_sec < warntime && !quietlog)
461 (void)printf("Warning: your password expires on %s",
462 ctime(&pwd->pw_change));
467 struct addrinfo hints, *res;
470 memset(&hints, 0, sizeof(hints));
471 hints.ai_family = AF_UNSPEC;
472 ga_err = getaddrinfo(full_hostname, NULL, &hints,
475 char hostbuf[MAXHOSTNAMELEN];
477 getnameinfo(res->ai_addr, res->ai_addrlen,
478 hostbuf, sizeof(hostbuf), NULL, 0,
480 if ((optarg = strdup(hostbuf)) == NULL) {
481 syslog(LOG_NOTICE, "strdup(): %m");
488 if (!auth_hostok(lc, full_hostname, optarg))
489 refused("Permission denied", "HOST", 1);
492 if (!auth_ttyok(lc, tty))
493 refused("Permission denied", "TTY", 1);
495 if (!auth_timeok(lc, time(NULL)))
496 refused("Logins not available right now", "TIME", 1);
498 shell = login_getcapstr(lc, "shell", pwd->pw_shell, pwd->pw_shell);
499 if (*pwd->pw_shell == '\0')
500 pwd->pw_shell = _PATH_BSHELL;
501 if (*shell == '\0') /* Not overridden */
502 shell = pwd->pw_shell;
503 if ((shell = strdup(shell)) == NULL) {
504 syslog(LOG_NOTICE, "strdup(): %m");
509 if (login_access(pwd->pw_name, hostname ? full_hostname : tty) == 0)
510 refused("Permission denied", "ACCESS", 1);
511 #endif /* LOGIN_ACCESS */
514 ulog_login(tty, username, hostname);
516 /* Nothing else left to fail -- really log in. */
517 memset((void *)&utmp, 0, sizeof(utmp));
518 (void)gettimeofday(&utmp.ut_tv, NULL);
519 (void)strncpy(utmp.ut_user, username, sizeof(utmp.ut_user));
521 (void)strncpy(utmp.ut_host, hostname, sizeof(utmp.ut_host));
522 (void)strncpy(utmp.ut_line, tty, sizeof(utmp.ut_line));
529 * Set device protections, depending on what terminal the
530 * user is logged in. This feature is used on Suns to give
531 * console users better privacy.
533 login_fbtab(tty, pwd->pw_uid, pwd->pw_gid);
536 * Clear flags of the tty. None should be set, and when the
537 * user sets them otherwise, this can cause the chown to fail.
538 * Since it isn't clear that flags are useful on character
539 * devices, we just clear them.
541 if (chflags(ttyn, 0) && errno != EOPNOTSUPP)
542 syslog(LOG_ERR, "chflags(%s): %m", ttyn);
543 if (chown(ttyn, pwd->pw_uid,
544 (gr = getgrnam(TTYGRPNAME)) ? gr->gr_gid : pwd->pw_gid))
545 syslog(LOG_ERR, "chown(%s): %m", ttyn);
549 * Preserve TERM if it happens to be already set.
551 if ((term = getenv("TERM")) != NULL) {
552 if ((term = strdup(term)) == NULL) {
560 * Exclude cons/vt/ptys only, assume dialup otherwise
561 * TODO: Make dialup tty determination a library call
562 * for consistency (finger etc.)
564 if (hostname==NULL && isdialuptty(tty))
565 syslog(LOG_INFO, "DIALUP %s, %s", tty, pwd->pw_name);
569 * Syslog each successful login, so we don't have to watch hundreds
570 * of wtmp or lastlogin files.
573 syslog(LOG_INFO, "login from %s on %s as %s",
574 full_hostname, tty, pwd->pw_name);
576 syslog(LOG_INFO, "login on %s as %s",
581 * If fflag is on, assume caller/authenticator has logged root login.
583 if (rootlogin && fflag == 0)
586 syslog(LOG_NOTICE, "ROOT LOGIN (%s) ON %s FROM %s",
587 username, tty, full_hostname);
589 syslog(LOG_NOTICE, "ROOT LOGIN (%s) ON %s",
594 * Destroy environment unless user has requested its preservation.
595 * We need to do this before setusercontext() because that may
596 * set or reset some environment variables.
602 * PAM modules might add supplementary groups during pam_setcred().
604 if (setusercontext(lc, pwd, pwd->pw_uid, LOGIN_SETGROUP) != 0) {
605 syslog(LOG_ERR, "setusercontext() failed - exiting");
611 if ((e = pam_open_session(pamh, 0)) != PAM_SUCCESS) {
612 syslog(LOG_ERR, "pam_open_session: %s",
613 pam_strerror(pamh, e));
614 } else if ((e = pam_setcred(pamh, PAM_ESTABLISH_CRED))
616 syslog(LOG_ERR, "pam_setcred: %s",
617 pam_strerror(pamh, e));
621 * Add any environmental variables that the
622 * PAM modules may have set.
623 * Call *after* opening session!
626 environ_pam = pam_getenvlist(pamh);
628 export_pam_environment();
632 * We must fork() before setuid() because we need to call
633 * pam_close_session() as root.
641 /* parent - wait for child to finish, then cleanup
647 if ((e = pam_end(pamh, 0)) != PAM_SUCCESS)
648 syslog(LOG_ERR, "pam_end: %s",
649 pam_strerror(pamh, e));
655 * We don't need to be root anymore, so
656 * set the user and session context
658 if (setlogin(username) != 0) {
659 syslog(LOG_ERR, "setlogin(%s): %m - exiting", username);
662 if (setusercontext(lc, pwd, pwd->pw_uid,
663 LOGIN_SETALL & ~(LOGIN_SETLOGIN|LOGIN_SETGROUP)) != 0) {
664 syslog(LOG_ERR, "setusercontext() failed - exiting");
668 (void)setenv("SHELL", pwd->pw_shell, 1);
669 (void)setenv("HOME", pwd->pw_dir, 1);
670 if (term != NULL && *term != '\0')
671 (void)setenv("TERM", term, 1); /* Preset overrides */
673 (void)setenv("TERM", stypeof(tty), 0); /* Fallback doesn't */
675 (void)setenv("LOGNAME", username, 1);
676 (void)setenv("USER", username, 1);
677 (void)setenv("PATH", rootlogin ? _PATH_STDPATH : _PATH_DEFPATH, 0);
682 cw = login_getcapstr(lc, "copyright", NULL, NULL);
683 if (cw != NULL && access(cw, F_OK) == 0)
686 (void)printf("%s\n\t%s %s\n",
687 "Copyright (c) 1980, 1983, 1986, 1988, 1990, 1991, 1993, 1994",
688 "The Regents of the University of California. ",
689 "All rights reserved.");
693 cw = login_getcapstr(lc, "welcome", NULL, NULL);
694 if (cw == NULL || access(cw, F_OK) != 0)
698 cw = getenv("MAIL"); /* $MAIL may have been set by class */
700 strlcpy(tbuf, cw, sizeof(tbuf));
702 snprintf(tbuf, sizeof(tbuf), "%s/%s", _PATH_MAILDIR,
704 if (stat(tbuf, &st) == 0 && st.st_size != 0)
705 (void)printf("You have %smail.\n",
706 (st.st_mtime > st.st_atime) ? "new " : "");
711 (void)signal(SIGALRM, SIG_DFL);
712 (void)signal(SIGQUIT, SIG_DFL);
713 (void)signal(SIGINT, SIG_DFL);
714 (void)signal(SIGTSTP, SIG_IGN);
717 * Login shells have a leading '-' in front of argv[0]
719 if (snprintf(tbuf, sizeof(tbuf), "-%s",
720 (p = strrchr(pwd->pw_shell, '/')) ? p + 1 : pwd->pw_shell) >=
722 syslog(LOG_ERR, "user: %s: shell exceeds maximum pathname size",
724 errx(1, "shell exceeds maximum pathname size");
727 execlp(shell, tbuf, (char *)0);
740 salt = pwd != NULL ? pwd->pw_passwd : "xx";
742 p = getpass(passwd_prompt);
746 if (!p[0] && pwd->pw_passwd[0])
748 if (strcmp(ep, pwd->pw_passwd) == 0)
752 /* clear entered password */
753 memset(p, 0, strlen(p));
759 * Attempt to authenticate the user using PAM. Returns 0 if the user is
760 * authenticated, or 1 if not authenticated. If some sort of PAM system
761 * error occurs (e.g., the "/etc/pam.conf" file is missing) then this
762 * function returns -1. This can be used as an indication that we should
763 * fall back to a different authentication mechanism.
768 const char *tmpl_user;
772 static struct pam_conv conv = { openpam_ttyconv, NULL };
774 if ((e = pam_start("login", username, &conv, &pamh)) != PAM_SUCCESS) {
775 syslog(LOG_ERR, "pam_start: %s", pam_strerror(pamh, e));
778 if ((e = pam_set_item(pamh, PAM_TTY, tty)) != PAM_SUCCESS) {
779 syslog(LOG_ERR, "pam_set_item(PAM_TTY): %s",
780 pam_strerror(pamh, e));
783 if (hostname != NULL &&
784 (e = pam_set_item(pamh, PAM_RHOST, full_hostname)) != PAM_SUCCESS) {
785 syslog(LOG_ERR, "pam_set_item(PAM_RHOST): %s",
786 pam_strerror(pamh, e));
789 e = pam_authenticate(pamh, 0);
794 * With PAM we support the concept of a "template"
795 * user. The user enters a login name which is
796 * authenticated by PAM, usually via a remote service
797 * such as RADIUS or TACACS+. If authentication
798 * succeeds, a different but related "template" name
799 * is used for setting the credentials, shell, and
800 * home directory. The name the user enters need only
801 * exist on the remote authentication server, but the
802 * template name must be present in the local password
805 * This is supported by two various mechanisms in the
806 * individual modules. However, from the application's
807 * point of view, the template user is always passed
808 * back as a changed value of the PAM_USER item.
810 if ((e = pam_get_item(pamh, PAM_USER, &item)) ==
812 tmpl_user = (const char *) item;
813 if (strcmp(username, tmpl_user) != 0)
814 pwd = getpwnam(tmpl_user);
816 syslog(LOG_ERR, "Couldn't get PAM_USER: %s",
817 pam_strerror(pamh, e));
822 case PAM_USER_UNKNOWN:
828 syslog(LOG_ERR, "pam_authenticate: %s", pam_strerror(pamh, e));
834 e = pam_acct_mgmt(pamh, 0);
835 if (e == PAM_NEW_AUTHTOK_REQD) {
836 e = pam_chauthtok(pamh, PAM_CHANGE_EXPIRED_AUTHTOK);
837 if (e != PAM_SUCCESS) {
838 syslog(LOG_ERR, "pam_chauthtok: %s",
839 pam_strerror(pamh, e));
842 } else if (e != PAM_SUCCESS) {
848 if ((e = pam_end(pamh, e)) != PAM_SUCCESS) {
849 syslog(LOG_ERR, "pam_end: %s", pam_strerror(pamh, e));
857 export_pam_environment()
861 for (pp = environ_pam; *pp != NULL; pp++) {
862 if (ok_to_export(*pp))
870 * Sanity checks on PAM environmental variables:
871 * - Make sure there is an '=' in the string.
872 * - Make sure the string doesn't run on too long.
873 * - Do not export certain variables. This list was taken from the
874 * Solaris pam_putenv(3) man page.
880 static const char *noexport[] = {
881 "SHELL", "HOME", "LOGNAME", "MAIL", "CDPATH",
887 if (strlen(s) > 1024 || strchr(s, '=') == NULL)
889 if (strncmp(s, "LD_", 3) == 0)
891 for (pp = noexport; *pp != NULL; pp++) {
893 if (s[n] == '=' && strncmp(s, *pp, n) == 0)
904 (void)fprintf(stderr, "usage: login [-fp] [-h hostname] [username]\n");
909 * Allow for authentication style and/or kerberos instance
912 #define NBUFSIZ 128 // XXX was UT_NAMESIZE + 64
919 static char nbuf[NBUFSIZ];
922 (void)printf("%s", prompt);
923 for (p = nbuf; (ch = getchar()) != '\n'; ) {
928 if (p < nbuf + (NBUFSIZ - 1))
933 (void)fprintf(stderr,
934 "login names may not start with '-'.\n");
950 return ((t = getttynam(ttyn)) && t->ty_status & TTY_SECURE);
953 volatile int motdinterrupt;
964 const char *motdfile;
970 if ((fd = open(motdfile, O_RDONLY, 0)) < 0)
973 oldint = signal(SIGINT, sigint);
974 while ((nchars = read(fd, tbuf, sizeof(tbuf))) > 0 && !motdinterrupt)
975 (void)write(fileno(stdout), tbuf, nchars);
976 (void)signal(SIGINT, oldint);
986 longjmp(timeout_buf, signo);
994 #if 0 /* XXX not implemented after utmp->utmpx change */
998 if ((fd = open(_PATH_LASTLOG, O_RDWR, 0)) >= 0) {
999 (void)lseek(fd, (off_t)pwd->pw_uid * sizeof(ll), L_SET);
1001 if (read(fd, (char *)&ll, sizeof(ll)) == sizeof(ll) &&
1003 (void)printf("Last login: %.*s ",
1004 24-5, (char *)ctime(&ll.ll_time));
1005 if (*ll.ll_host != '\0')
1006 (void)printf("from %.*s\n",
1007 (int)sizeof(ll.ll_host),
1010 (void)printf("on %.*s\n",
1011 (int)sizeof(ll.ll_line),
1014 (void)lseek(fd, (off_t)pwd->pw_uid * sizeof(ll), L_SET);
1016 memset((void *)&ll, 0, sizeof(ll));
1017 (void)time(&ll.ll_time);
1018 (void)strncpy(ll.ll_line, tty, sizeof(ll.ll_line));
1020 (void)strncpy(ll.ll_host, hostname, sizeof(ll.ll_host));
1021 (void)write(fd, (char *)&ll, sizeof(ll));
1024 syslog(LOG_ERR, "cannot open %s: %m", _PATH_LASTLOG);
1037 syslog(LOG_NOTICE, "%d LOGIN FAILURE%s FROM %s",
1038 failures, failures > 1 ? "S" : "", full_hostname);
1039 syslog(LOG_AUTHPRIV|LOG_NOTICE,
1040 "%d LOGIN FAILURE%s FROM %s, %s",
1041 failures, failures > 1 ? "S" : "", full_hostname, name);
1043 syslog(LOG_NOTICE, "%d LOGIN FAILURE%s ON %s",
1044 failures, failures > 1 ? "S" : "", tty);
1045 syslog(LOG_AUTHPRIV|LOG_NOTICE,
1046 "%d LOGIN FAILURE%s ON %s, %s",
1047 failures, failures > 1 ? "S" : "", tty, name);
1053 #define UNKNOWN "su"
1061 if (ttyid != NULL && *ttyid != '\0') {
1062 t = getttynam(ttyid);
1063 if (t != NULL && t->ty_type != NULL)
1064 return (t->ty_type);
1070 refused(msg, rtype, lout)
1077 printf("%s.\n", msg);
1079 syslog(LOG_NOTICE, "LOGIN %s REFUSED (%s) FROM %s ON TTY %s",
1080 pwd->pw_name, rtype, full_hostname, tty);
1082 syslog(LOG_NOTICE, "LOGIN %s REFUSED (%s) ON TTY %s",
1083 pwd->pw_name, rtype, tty);