login.c revision 30564
11590Srgrimes/*- 21590Srgrimes * Copyright (c) 1980, 1987, 1988, 1991, 1993, 1994 31590Srgrimes * The Regents of the University of California. All rights reserved. 41590Srgrimes * 51590Srgrimes * Redistribution and use in source and binary forms, with or without 61590Srgrimes * modification, are permitted provided that the following conditions 71590Srgrimes * are met: 81590Srgrimes * 1. Redistributions of source code must retain the above copyright 91590Srgrimes * notice, this list of conditions and the following disclaimer. 101590Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111590Srgrimes * notice, this list of conditions and the following disclaimer in the 121590Srgrimes * documentation and/or other materials provided with the distribution. 131590Srgrimes * 3. All advertising materials mentioning features or use of this software 141590Srgrimes * must display the following acknowledgement: 151590Srgrimes * This product includes software developed by the University of 161590Srgrimes * California, Berkeley and its contributors. 171590Srgrimes * 4. Neither the name of the University nor the names of its contributors 181590Srgrimes * may be used to endorse or promote products derived from this software 191590Srgrimes * without specific prior written permission. 201590Srgrimes * 211590Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221590Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231590Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241590Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251590Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261590Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271590Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281590Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291590Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301590Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311590Srgrimes * SUCH DAMAGE. 321590Srgrimes */ 331590Srgrimes 3423246Swosch#if 0 351590Srgrimesstatic char copyright[] = 361590Srgrimes"@(#) Copyright (c) 1980, 1987, 1988, 1991, 1993, 1994\n\ 371590Srgrimes The Regents of the University of California. All rights reserved.\n"; 3823246Swosch#endif 391590Srgrimes 401590Srgrimes#ifndef lint 4127605Scharnier#if 0 421590Srgrimesstatic char sccsid[] = "@(#)login.c 8.4 (Berkeley) 4/2/94"; 4327605Scharnier#endif 4427605Scharnierstatic const char rcsid[] = 4530564Sjoerg "$Id: login.c,v 1.29 1997/09/28 08:49:22 markm Exp $"; 461590Srgrimes#endif /* not lint */ 471590Srgrimes 481590Srgrimes/* 491590Srgrimes * login [ name ] 501590Srgrimes * login -h hostname (for telnetd, etc.) 511590Srgrimes * login -f name (for pre-authenticated login: datakit, xterm, etc.) 521590Srgrimes */ 531590Srgrimes 5423246Swosch#include <sys/copyright.h> 551590Srgrimes#include <sys/param.h> 561590Srgrimes#include <sys/stat.h> 571590Srgrimes#include <sys/time.h> 581590Srgrimes#include <sys/resource.h> 591590Srgrimes#include <sys/file.h> 6016423Sache#include <netinet/in.h> 6116423Sache#include <arpa/inet.h> 621590Srgrimes 631590Srgrimes#include <err.h> 641590Srgrimes#include <errno.h> 651590Srgrimes#include <grp.h> 6616423Sache#include <netdb.h> 671590Srgrimes#include <pwd.h> 681590Srgrimes#include <setjmp.h> 691590Srgrimes#include <signal.h> 701590Srgrimes#include <stdio.h> 711590Srgrimes#include <stdlib.h> 721590Srgrimes#include <string.h> 731590Srgrimes#include <syslog.h> 741590Srgrimes#include <ttyent.h> 751590Srgrimes#include <unistd.h> 761590Srgrimes#include <utmp.h> 771590Srgrimes 7821528Sdavidn#ifdef LOGIN_CAP 7921528Sdavidn#include <login_cap.h> 8021528Sdavidn#else /* Undef AUTH as well */ 8121528Sdavidn#undef LOGIN_CAP_AUTH 8221528Sdavidn#endif 8321528Sdavidn 8423985Sdavidn/* 8523985Sdavidn * If LOGIN_CAP_AUTH is activated: 8621528Sdavidn * kerberose & skey logins are runtime selected via login 8721528Sdavidn * login_getstyle() and authentication types for login classes 8821528Sdavidn * The actual login itself is handled via /usr/libexec/login_<style> 8921528Sdavidn * Valid styles are determined by the auth-type=style,style entries 9021528Sdavidn * in the login class. 9121528Sdavidn */ 9221528Sdavidn#ifdef LOGIN_CAP_AUTH 9321528Sdavidn#undef KERBEROS 9421528Sdavidn#undef SKEY 9523985Sdavidn#endif /* LOGIN_CAP_AUTH */ 9623985Sdavidn 973702Spst#ifdef SKEY 983702Spst#include <skey.h> 9921528Sdavidn#endif /* SKEY */ 1003702Spst 1011590Srgrimes#include "pathnames.h" 1021590Srgrimes 1031590Srgrimesvoid badlogin __P((char *)); 1041590Srgrimesvoid checknologin __P((void)); 1051590Srgrimesvoid dolastlog __P((int)); 1061590Srgrimesvoid getloginname __P((void)); 10721528Sdavidnvoid motd __P((char *)); 1081590Srgrimesint rootterm __P((char *)); 1091590Srgrimesvoid sigint __P((int)); 1101590Srgrimesvoid sleepexit __P((int)); 11123985Sdavidnvoid refused __P((char *,char *,int)); 1121590Srgrimeschar *stypeof __P((char *)); 1131590Srgrimesvoid timedout __P((int)); 11429922Smarkmint login_access __P((char *, char *)); 1152224Sguidovoid login_fbtab __P((char *, uid_t, gid_t)); 1161590Srgrimes#ifdef KERBEROS 1171590Srgrimesint klogin __P((struct passwd *, char *, char *, char *)); 1181590Srgrimes#endif 1191590Srgrimes 1201590Srgrimesextern void login __P((struct utmp *)); 12127605Scharnierstatic void usage __P((void)); 1221590Srgrimes 1231590Srgrimes#define TTYGRPNAME "tty" /* name of group to own ttys */ 12423985Sdavidn#define DEFAULT_BACKOFF 3 12523985Sdavidn#define DEFAULT_RETRIES 10 1261590Srgrimes 1271590Srgrimes/* 1281590Srgrimes * This bounds the time given to login. Not a define so it can 1291590Srgrimes * be patched on machines where it's too small. 1301590Srgrimes */ 1311590Srgrimesu_int timeout = 300; 1321590Srgrimes 1331590Srgrimes#ifdef KERBEROS 1341590Srgrimesint notickets = 1; 1355627Swollmanint noticketsdontcomplain = 1; 1361590Srgrimeschar *instance; 1371590Srgrimeschar *krbtkfile_env; 1381590Srgrimesint authok; 1391590Srgrimes#endif 1401590Srgrimes 1411590Srgrimesstruct passwd *pwd; 1421590Srgrimesint failures; 14323985Sdavidnchar *term, *envinit[1], *hostname, *username, *tty; 14416423Sachechar full_hostname[MAXHOSTNAMELEN]; 1451590Srgrimes 1461590Srgrimesint 1471590Srgrimesmain(argc, argv) 1481590Srgrimes int argc; 1491590Srgrimes char *argv[]; 1501590Srgrimes{ 1511590Srgrimes extern char **environ; 1521590Srgrimes struct group *gr; 1531590Srgrimes struct stat st; 1541590Srgrimes struct timeval tp; 1551590Srgrimes struct utmp utmp; 15623985Sdavidn int rootok, retries, backoff; 1571590Srgrimes int ask, ch, cnt, fflag, hflag, pflag, quietlog, rootlogin, rval; 1584878Sugen int changepass; 15923985Sdavidn time_t warntime; 1601590Srgrimes uid_t uid; 1613205Spst char *domain, *p, *ep, *salt, *ttyn; 1621590Srgrimes char tbuf[MAXPATHLEN + 2], tname[sizeof(_PATH_TTY) + 10]; 1631590Srgrimes char localhost[MAXHOSTNAMELEN]; 16423985Sdavidn char *shell = NULL; 16521528Sdavidn#ifdef LOGIN_CAP 16621528Sdavidn login_cap_t *lc = NULL; 16721528Sdavidn#ifdef LOGIN_CAP_AUTH 16821528Sdavidn char *style, *authtype; 16921528Sdavidn char *auth_method = NULL; 17021528Sdavidn char *instance = NULL; 17121528Sdavidn int authok; 17223985Sdavidn#endif /* LOGIN_CAP_AUTH */ 17323985Sdavidn#endif /* LOGIN_CAP */ 17421528Sdavidn#ifdef SKEY 1753205Spst int permit_passwd = 0; 17621528Sdavidn#endif /* SKEY */ 1771590Srgrimes 1781590Srgrimes (void)signal(SIGALRM, timedout); 1791590Srgrimes (void)alarm(timeout); 1801590Srgrimes (void)signal(SIGQUIT, SIG_IGN); 1811590Srgrimes (void)signal(SIGINT, SIG_IGN); 1821590Srgrimes (void)setpriority(PRIO_PROCESS, 0, 0); 1831590Srgrimes 1841590Srgrimes openlog("login", LOG_ODELAY, LOG_AUTH); 1851590Srgrimes 1861590Srgrimes /* 1871590Srgrimes * -p is used by getty to tell login not to destroy the environment 1881590Srgrimes * -f is used to skip a second login authentication 1891590Srgrimes * -h is used by other servers to pass the name of the remote 1901590Srgrimes * host to login so that it may be placed in utmp and wtmp 1911590Srgrimes */ 1923205Spst *full_hostname = '\0'; 1931590Srgrimes domain = NULL; 19423985Sdavidn term = NULL; 1951590Srgrimes if (gethostname(localhost, sizeof(localhost)) < 0) 1961590Srgrimes syslog(LOG_ERR, "couldn't get local hostname: %m"); 1971590Srgrimes else 1981590Srgrimes domain = strchr(localhost, '.'); 1991590Srgrimes 2001590Srgrimes fflag = hflag = pflag = 0; 2011590Srgrimes uid = getuid(); 20224360Simp while ((ch = getopt(argc, argv, "fh:p")) != -1) 2031590Srgrimes switch (ch) { 2041590Srgrimes case 'f': 2051590Srgrimes fflag = 1; 2061590Srgrimes break; 2071590Srgrimes case 'h': 2081590Srgrimes if (uid) 2091590Srgrimes errx(1, "-h option: %s", strerror(EPERM)); 2101590Srgrimes hflag = 1; 2113205Spst strncpy(full_hostname, optarg, sizeof(full_hostname)-1); 2121590Srgrimes if (domain && (p = strchr(optarg, '.')) && 2131590Srgrimes strcasecmp(p, domain) == 0) 2141590Srgrimes *p = 0; 21516423Sache if (strlen(optarg) > UT_HOSTSIZE) { 21616423Sache struct hostent *hp = gethostbyname(optarg); 21716423Sache 21816423Sache if (hp != NULL) { 21916423Sache struct in_addr in; 22016423Sache 22116423Sache memmove(&in, hp->h_addr, sizeof(in)); 22216423Sache optarg = strdup(inet_ntoa(in)); 22316423Sache } else 22416423Sache optarg = "invalid hostname"; 22516423Sache } 2261590Srgrimes hostname = optarg; 2271590Srgrimes break; 2281590Srgrimes case 'p': 2291590Srgrimes pflag = 1; 2301590Srgrimes break; 2311590Srgrimes case '?': 2321590Srgrimes default: 2331590Srgrimes if (!uid) 2341590Srgrimes syslog(LOG_ERR, "invalid flag %c", ch); 23527605Scharnier usage(); 2361590Srgrimes } 2371590Srgrimes argc -= optind; 2381590Srgrimes argv += optind; 2391590Srgrimes 2401590Srgrimes if (*argv) { 2411590Srgrimes username = *argv; 2421590Srgrimes ask = 0; 2431590Srgrimes } else 2441590Srgrimes ask = 1; 2451590Srgrimes 2461590Srgrimes for (cnt = getdtablesize(); cnt > 2; cnt--) 2471590Srgrimes (void)close(cnt); 2481590Srgrimes 2491590Srgrimes ttyn = ttyname(STDIN_FILENO); 2501590Srgrimes if (ttyn == NULL || *ttyn == '\0') { 2511590Srgrimes (void)snprintf(tname, sizeof(tname), "%s??", _PATH_TTY); 2521590Srgrimes ttyn = tname; 2531590Srgrimes } 25423985Sdavidn if ((tty = strrchr(ttyn, '/')) != NULL) 2551590Srgrimes ++tty; 2561590Srgrimes else 2571590Srgrimes tty = ttyn; 2581590Srgrimes 25921528Sdavidn#ifdef LOGIN_CAP_AUTH 26021528Sdavidn authtype = hostname ? "rlogin" : "login"; 26121528Sdavidn#endif 26223985Sdavidn#ifdef LOGIN_CAP 26323985Sdavidn /* 26423985Sdavidn * Get "login-retries" & "login-backoff" from default class 26523985Sdavidn */ 26623985Sdavidn lc = login_getclass(NULL); 26723985Sdavidn retries = login_getcapnum(lc, "login-retries", DEFAULT_RETRIES, DEFAULT_RETRIES); 26823985Sdavidn backoff = login_getcapnum(lc, "login-backoff", DEFAULT_BACKOFF, DEFAULT_BACKOFF); 26923985Sdavidn login_close(lc); 27023985Sdavidn lc = NULL; 27123985Sdavidn#else 27223985Sdavidn retries = DEFAULT_RETRIES; 27323985Sdavidn backoff = DEFAULT_BACKOFF; 27423985Sdavidn#endif 27521528Sdavidn 2761590Srgrimes for (cnt = 0;; ask = 1) { 2771590Srgrimes if (ask) { 2781590Srgrimes fflag = 0; 2791590Srgrimes getloginname(); 2801590Srgrimes } 2811590Srgrimes rootlogin = 0; 28221528Sdavidn rootok = rootterm(tty); /* Default (auth may change) */ 28321528Sdavidn#ifdef LOGIN_CAP_AUTH 28421528Sdavidn authok = 0; 28521528Sdavidn if (auth_method = strchr(username, ':')) { 28621528Sdavidn *auth_method = '\0'; 28721528Sdavidn auth_method++; 28821528Sdavidn if (*auth_method == '\0') 28921528Sdavidn auth_method = NULL; 29021528Sdavidn } 29121528Sdavidn /* 29221528Sdavidn * We need to do this regardless of whether 29321528Sdavidn * kerberos is available. 29421528Sdavidn */ 2951590Srgrimes if ((instance = strchr(username, '.')) != NULL) { 2961590Srgrimes if (strncmp(instance, ".root", 5) == 0) 2971590Srgrimes rootlogin = 1; 2981590Srgrimes *instance++ = '\0'; 2991590Srgrimes } else 3001590Srgrimes instance = ""; 30121528Sdavidn#else /* !LOGIN_CAP_AUTH */ 30221528Sdavidn#ifdef KERBEROS 30321528Sdavidn if ((instance = strchr(username, '.')) != NULL) { 30421528Sdavidn if (strncmp(instance, ".root", 5) == 0) 30521528Sdavidn rootlogin = 1; 30621528Sdavidn *instance++ = '\0'; 30721528Sdavidn } else 30821528Sdavidn instance = ""; 30921528Sdavidn#endif /* KERBEROS */ 31021528Sdavidn#endif /* LOGIN_CAP_AUTH */ 31121528Sdavidn 3121590Srgrimes if (strlen(username) > UT_NAMESIZE) 3131590Srgrimes username[UT_NAMESIZE] = '\0'; 3141590Srgrimes 3151590Srgrimes /* 3161590Srgrimes * Note if trying multiple user names; log failures for 3171590Srgrimes * previous user name, but don't bother logging one failure 3181590Srgrimes * for nonexistent name (mistyped username). 3191590Srgrimes */ 3201590Srgrimes if (failures && strcmp(tbuf, username)) { 3211590Srgrimes if (failures > (pwd ? 0 : 1)) 3221590Srgrimes badlogin(tbuf); 3231590Srgrimes failures = 0; 3241590Srgrimes } 32527605Scharnier (void)strncpy(tbuf, username, sizeof tbuf-1); 32627605Scharnier tbuf[sizeof tbuf-1] = '\0'; 3271590Srgrimes 32823985Sdavidn if ((pwd = getpwnam(username)) != NULL) 32923985Sdavidn salt = pwd->pw_passwd; 33023985Sdavidn else 33123985Sdavidn salt = "xx"; 33223985Sdavidn 33321528Sdavidn#ifdef LOGIN_CAP 33423985Sdavidn /* 33523985Sdavidn * Establish the class now, before we might goto 33621528Sdavidn * within the next block. pwd can be NULL since it 33721528Sdavidn * falls back to the "default" class if it is. 33821528Sdavidn */ 33925671Sdavidn lc = login_getpwclass(pwd); 34021528Sdavidn#endif /* LOGIN_CAP */ 3411590Srgrimes 3421590Srgrimes /* 3431590Srgrimes * if we have a valid account name, and it doesn't have a 3441590Srgrimes * password, or the -f option was specified and the caller 3451590Srgrimes * is root or the caller isn't changing their uid, don't 3461590Srgrimes * authenticate. 3471590Srgrimes */ 34823985Sdavidn rval = 1; 34921528Sdavidn if (pwd != NULL) { 3503205Spst if (pwd->pw_uid == 0) 3513205Spst rootlogin = 1; 3523205Spst 35323985Sdavidn if (fflag && (uid == (uid_t)0 || 35423985Sdavidn uid == (uid_t)pwd->pw_uid)) { 3553205Spst /* already authenticated */ 3563205Spst break; 3573205Spst } else if (pwd->pw_passwd[0] == '\0') { 35824321Sdavidn if (!rootlogin || rootok) { 35924251Sdavidn /* pretend password okay */ 36024251Sdavidn rval = 0; 36124251Sdavidn goto ttycheck; 36224251Sdavidn } 3633205Spst } 3643205Spst } 3653205Spst 3661590Srgrimes fflag = 0; 3671590Srgrimes 3681590Srgrimes (void)setpriority(PRIO_PROCESS, 0, -4); 3691590Srgrimes 37021528Sdavidn#ifdef LOGIN_CAP_AUTH 37121528Sdavidn /* 37223985Sdavidn * This hands off authorization to an authorization program, 37321528Sdavidn * depending on the styles available for the "auth-login", 37423985Sdavidn * auth-rlogin (or default) authorization styles. 37521528Sdavidn * We do this regardless of whether an account exists so that 37621528Sdavidn * the remote user cannot tell a "real" from an invented 37721528Sdavidn * account name. If we don't have an account we just fall 37821528Sdavidn * back to the first method for the "default" class. 37921528Sdavidn */ 38023985Sdavidn if (!(style = login_getstyle(lc, auth_method, authtype))) { 38123985Sdavidn 38223985Sdavidn /* 38323985Sdavidn * No available authorization method 38423985Sdavidn */ 38523985Sdavidn rval = 1; 38623985Sdavidn (void)printf("No auth method available for %s.\n", 38723985Sdavidn authtype); 38821528Sdavidn } else { 38923985Sdavidn 39023985Sdavidn /* 39123985Sdavidn * Put back the kerberos instance, if any was given. 39221528Sdavidn * Don't worry about the non-kerberos case here, since 39321528Sdavidn * if kerberos is not available or not selected and an 39421528Sdavidn * instance is given at the login prompt, su or rlogin -l, 39521528Sdavidn * then anything else should fail as well. 39621528Sdavidn */ 39721528Sdavidn if (*instance) 39821528Sdavidn *(instance - 1) = '.'; 39923985Sdavidn 40023985Sdavidn rval = authenticate(username, 40123985Sdavidn lc ? lc->lc_class : "default", 40223985Sdavidn style, authtype); 40321528Sdavidn /* Junk it again */ 40421528Sdavidn if (*instance) 40521528Sdavidn *(instance - 1) = '\0'; 40621528Sdavidn } 40721528Sdavidn 40821528Sdavidn if (!rval) { 40923985Sdavidn char * approvp; 41023985Sdavidn 41121528Sdavidn /* 41221528Sdavidn * If authentication succeeds, run any approval 41321528Sdavidn * program, if applicable for this class. 41421528Sdavidn */ 41523985Sdavidn approvep = login_getcapstr(lc, "approve", NULL, NULL); 41621528Sdavidn rval = 1; /* Assume bad login again */ 41723985Sdavidn 41823985Sdavidn if (approvep==NULL || 41923985Sdavidn auth_script(approvep, approvep, username, 42023985Sdavidn lc->lc_class, 0) == 0) { 42123985Sdavidn int r; 42223985Sdavidn 42323985Sdavidn r = auth_scan(AUTH_OKAY); 42423985Sdavidn /* 42523985Sdavidn * See what the authorize program says 42623985Sdavidn */ 42721528Sdavidn if (r != AUTH_NONE) { 42821528Sdavidn rval = 0; 42923985Sdavidn 43021528Sdavidn if (!rootok && (r & AUTH_ROOTOKAY)) 43121528Sdavidn rootok = 1; /* root approved */ 43223985Sdavidn else 43323985Sdavidn rootlogin = 0; 43423985Sdavidn 43521528Sdavidn if (!authok && (r & AUTH_SECURE)) 43621528Sdavidn authok = 1; /* secure */ 43721528Sdavidn } 43821528Sdavidn } 43921528Sdavidn } 44021528Sdavidn#else /* !LOGIN_CAP_AUTH */ 44121528Sdavidn#ifdef SKEY 44223985Sdavidn permit_passwd = skeyaccess(username, tty, 44323985Sdavidn hostname ? full_hostname : NULL, 44423985Sdavidn NULL); 4453205Spst p = skey_getpass("Password:", pwd, permit_passwd); 4463205Spst ep = skey_crypt(p, salt, pwd, permit_passwd); 44721528Sdavidn#else /* !SKEY */ 4481590Srgrimes p = getpass("Password:"); 4493205Spst ep = crypt(p, salt); 45021528Sdavidn#endif/* SKEY */ 45123985Sdavidn 45223985Sdavidn if (pwd) { 4531590Srgrimes#ifdef KERBEROS 4547800Swollman#ifdef SKEY 45523985Sdavidn /* 45623985Sdavidn * Do not allow user to type in kerberos password 4577800Swollman * over the net (actually, this is ok for encrypted 4587800Swollman * links, but we have no way of determining if the 4597800Swollman * link is encrypted. 4607800Swollman */ 4617893Srgrimes if (!permit_passwd) { 46223985Sdavidn rval = 1; /* failed */ 4637800Swollman } else 46421528Sdavidn#endif /* SKEY */ 4651590Srgrimes rval = klogin(pwd, instance, localhost, p); 4661590Srgrimes if (rval != 0 && rootlogin && pwd->pw_uid != 0) 4671590Srgrimes rootlogin = 0; 4681590Srgrimes if (rval == 0) 46921528Sdavidn authok = 1; /* kerberos authenticated ok */ 47021528Sdavidn else if (rval == 1) /* fallback to unix passwd */ 4713205Spst rval = strcmp(ep, pwd->pw_passwd); 47221528Sdavidn#else /* !KERBEROS */ 47323985Sdavidn rval = strcmp(ep, pwd->pw_passwd); 47421528Sdavidn#endif /* KERBEROS */ 47523985Sdavidn } 47623985Sdavidn 47721528Sdavidn /* clear entered password */ 4781590Srgrimes memset(p, 0, strlen(p)); 47921528Sdavidn#endif /* LOGIN_CAP_AUTH */ 4801590Srgrimes 4811590Srgrimes (void)setpriority(PRIO_PROCESS, 0, 0); 48223985Sdavidn 48325671Sdavidn#ifdef LOGIN_CAP_AUTH 48421528Sdavidn if (rval) 48521528Sdavidn auth_rmfiles(); 48621528Sdavidn#endif 4873205Spst ttycheck: 4881590Srgrimes /* 4891590Srgrimes * If trying to log in as root without Kerberos, 4901590Srgrimes * but with insecure terminal, refuse the login attempt. 4911590Srgrimes */ 49224222Sdavidn if (pwd && !rval) { 49321528Sdavidn#if defined(KERBEROS) || defined(LOGIN_CAP_AUTH) 49424222Sdavidn if (authok == 0 && rootlogin && !rootok) 49524222Sdavidn#else 49624222Sdavidn if (rootlogin && !rootok) 4971590Srgrimes#endif 49824222Sdavidn refused(NULL, "NOROOT", 0); 49924222Sdavidn else /* valid password & authenticated */ 50024222Sdavidn break; 5011590Srgrimes } 5021590Srgrimes 5031590Srgrimes (void)printf("Login incorrect\n"); 5041590Srgrimes failures++; 50523985Sdavidn 50623985Sdavidn /* 50723985Sdavidn * we allow up to 'retry' (10) tries, 50823985Sdavidn * but after 'backoff' (3) we start backing off 50923985Sdavidn */ 51023985Sdavidn if (++cnt > backoff) { 51123985Sdavidn if (cnt >= retries) { 5121590Srgrimes badlogin(username); 5131590Srgrimes sleepexit(1); 5141590Srgrimes } 5151590Srgrimes sleep((u_int)((cnt - 3) * 5)); 5161590Srgrimes } 5171590Srgrimes } 5181590Srgrimes 5191590Srgrimes /* committed to login -- turn off timeout */ 5201590Srgrimes (void)alarm((u_int)0); 5211590Srgrimes 5221590Srgrimes endpwent(); 5231590Srgrimes 5241590Srgrimes /* if user not super-user, check for disabled logins */ 52521528Sdavidn#ifdef LOGIN_CAP 5261590Srgrimes if (!rootlogin) 52721528Sdavidn auth_checknologin(lc); 52821528Sdavidn#else 52921528Sdavidn if (!rootlogin) 5301590Srgrimes checknologin(); 53121528Sdavidn#endif 5321590Srgrimes 53321528Sdavidn#ifdef LOGIN_CAP 53421528Sdavidn quietlog = login_getcapbool(lc, "hushlogin", 0); 53521528Sdavidn#else 53621528Sdavidn quietlog = 0; 53721528Sdavidn#endif 53821528Sdavidn if (!*pwd->pw_dir || chdir(pwd->pw_dir) < 0) { 53921528Sdavidn#ifdef LOGIN_CAP 54026021Spst if (login_getcapbool(lc, "requirehome", 0)) 54123985Sdavidn refused("Home directory not available", "HOMEDIR", 1); 54223985Sdavidn#endif 54324485Sdavidn if (chdir("/") < 0) 54423985Sdavidn refused("Cannot find root directory", "ROOTDIR", 1); 5451590Srgrimes pwd->pw_dir = "/"; 54623985Sdavidn if (!quietlog || *pwd->pw_dir) 54723985Sdavidn printf("No home directory.\nLogging in with home = \"/\".\n"); 5481590Srgrimes } 54921528Sdavidn if (!quietlog) 55021528Sdavidn quietlog = access(_PATH_HUSHLOGIN, F_OK) == 0; 5511590Srgrimes 5521590Srgrimes if (pwd->pw_change || pwd->pw_expire) 5531590Srgrimes (void)gettimeofday(&tp, (struct timezone *)NULL); 5542532Sjkh 55530564Sjoerg#define DEFAULT_WARN (2L * 7L * 86400L) /* Two weeks */ 55621528Sdavidn 55723985Sdavidn#ifdef LOGIN_CAP 55823985Sdavidn warntime = login_getcaptime(lc, "warnpassword", 55923985Sdavidn DEFAULT_WARN, DEFAULT_WARN); 56023985Sdavidn#else 56123985Sdavidn warntime = DEFAULT_WARN; 56223985Sdavidn#endif 56323985Sdavidn 5644878Sugen changepass=0; 56521528Sdavidn if (pwd->pw_change) { 5661590Srgrimes if (tp.tv_sec >= pwd->pw_change) { 5671590Srgrimes (void)printf("Sorry -- your password has expired.\n"); 5684878Sugen changepass=1; 56923985Sdavidn syslog(LOG_INFO, 57023985Sdavidn "%s Password expired - forcing change", 57123985Sdavidn pwd->pw_name); 57223985Sdavidn } else if (pwd->pw_change - tp.tv_sec < warntime && !quietlog) 57323985Sdavidn (void)printf("Warning: your password expires on %s", 57423985Sdavidn ctime(&pwd->pw_change)); 57523985Sdavidn } 57623985Sdavidn 57721528Sdavidn#ifdef LOGIN_CAP 57823985Sdavidn warntime = login_getcaptime(lc, "warnexpire", 57923985Sdavidn DEFAULT_WARN, DEFAULT_WARN); 58021528Sdavidn#else 58123985Sdavidn warntime = DEFAULT_WARN; 58221528Sdavidn#endif 58323985Sdavidn 58421528Sdavidn if (pwd->pw_expire) { 5851590Srgrimes if (tp.tv_sec >= pwd->pw_expire) { 58623985Sdavidn refused("Sorry -- your account has expired", 58723985Sdavidn "EXPIRED", 1); 58823985Sdavidn } else if (pwd->pw_expire - tp.tv_sec < warntime && !quietlog) 58923985Sdavidn (void)printf("Warning: your account expires on %s", 59023985Sdavidn ctime(&pwd->pw_expire)); 59121528Sdavidn } 5921590Srgrimes 59321528Sdavidn#ifdef LOGIN_CAP 59421528Sdavidn if (lc != NULL) { 59521528Sdavidn if (hostname) { 59621528Sdavidn struct hostent *hp = gethostbyname(full_hostname); 59721528Sdavidn 59821528Sdavidn if (hp == NULL) 59921528Sdavidn optarg = NULL; 60021528Sdavidn else { 60121528Sdavidn struct in_addr in; 60221528Sdavidn memmove(&in, hp->h_addr, sizeof(in)); 60321528Sdavidn optarg = strdup(inet_ntoa(in)); 60421528Sdavidn } 60523985Sdavidn if (!auth_hostok(lc, full_hostname, optarg)) 60623985Sdavidn refused("Permission denied", "HOST", 1); 60721528Sdavidn } 60821528Sdavidn 60923985Sdavidn if (!auth_ttyok(lc, tty)) 61023985Sdavidn refused("Permission denied", "TTY", 1); 61121528Sdavidn 61223985Sdavidn if (!auth_timeok(lc, time(NULL))) 61323985Sdavidn refused("Logins not available right now", "TIME", 1); 61421528Sdavidn } 61523985Sdavidn shell=login_getcapstr(lc, "shell", pwd->pw_shell, pwd->pw_shell); 61621528Sdavidn#else /* !LOGIN_CAP */ 61723985Sdavidn shell=pwd->pw_shell; 61821528Sdavidn#endif /* LOGIN_CAP */ 61923985Sdavidn if (*pwd->pw_shell == '\0') 62023985Sdavidn pwd->pw_shell = _PATH_BSHELL; 62123985Sdavidn if (*shell == '\0') /* Not overridden */ 62223985Sdavidn shell = pwd->pw_shell; 62323985Sdavidn if ((shell = strdup(shell)) == NULL) { 62423985Sdavidn syslog(LOG_NOTICE, "memory allocation error"); 62523985Sdavidn sleepexit(1); 62623985Sdavidn } 62721528Sdavidn 62821528Sdavidn#ifdef LOGIN_ACCESS 62923985Sdavidn if (login_access(pwd->pw_name, hostname ? full_hostname : tty) == 0) 63023985Sdavidn refused("Permission denied", "ACCESS", 1); 63121528Sdavidn#endif /* LOGIN_ACCESS */ 63221528Sdavidn 6331590Srgrimes /* Nothing else left to fail -- really log in. */ 6341590Srgrimes memset((void *)&utmp, 0, sizeof(utmp)); 6351590Srgrimes (void)time(&utmp.ut_time); 6361590Srgrimes (void)strncpy(utmp.ut_name, username, sizeof(utmp.ut_name)); 6371590Srgrimes if (hostname) 6381590Srgrimes (void)strncpy(utmp.ut_host, hostname, sizeof(utmp.ut_host)); 6391590Srgrimes (void)strncpy(utmp.ut_line, tty, sizeof(utmp.ut_line)); 6401590Srgrimes login(&utmp); 6411590Srgrimes 6421590Srgrimes dolastlog(quietlog); 6431590Srgrimes 6442224Sguido /* 6452224Sguido * Set device protections, depending on what terminal the 6462224Sguido * user is logged in. This feature is used on Suns to give 6472224Sguido * console users better privacy. 6482224Sguido */ 6492224Sguido login_fbtab(tty, pwd->pw_uid, pwd->pw_gid); 6502224Sguido 65123985Sdavidn (void)chown(ttyn, pwd->pw_uid, 65223985Sdavidn (gr = getgrnam(TTYGRPNAME)) ? gr->gr_gid : pwd->pw_gid); 6531590Srgrimes 65423985Sdavidn /* 65523985Sdavidn * Preserve TERM if it happens to be already set. 65623985Sdavidn */ 65724222Sdavidn if ((term = getenv("TERM")) != NULL) 65824222Sdavidn term = strdup(term); 6591590Srgrimes 66023985Sdavidn /* 66123985Sdavidn * Exclude cons/vt/ptys only, assume dialup otherwise 66223985Sdavidn * TODO: Make dialup tty determination a library call 66323985Sdavidn * for consistency (finger etc.) 66423985Sdavidn */ 66524894Sdavidn if (hostname==NULL && isdialuptty(tty)) 6661590Srgrimes syslog(LOG_INFO, "DIALUP %s, %s", tty, pwd->pw_name); 6671590Srgrimes 6681590Srgrimes#ifdef KERBEROS 6695627Swollman if (!quietlog && notickets == 1 && !noticketsdontcomplain) 6701590Srgrimes (void)printf("Warning: no Kerberos tickets issued.\n"); 6711590Srgrimes#endif 6721590Srgrimes 6733205Spst#ifdef LOGALL 6743205Spst /* 6753205Spst * Syslog each successful login, so we don't have to watch hundreds 6763205Spst * of wtmp or lastlogin files. 6773205Spst */ 67823985Sdavidn if (hostname) 67923985Sdavidn syslog(LOG_INFO, "login from %s on %s as %s", 68023985Sdavidn full_hostname, tty, pwd->pw_name); 68123985Sdavidn else 68223985Sdavidn syslog(LOG_INFO, "login on %s as %s", 68323985Sdavidn tty, pwd->pw_name); 68421528Sdavidn#endif 68521528Sdavidn 68623985Sdavidn /* 68723985Sdavidn * If fflag is on, assume caller/authenticator has logged root login. 68823985Sdavidn */ 68923985Sdavidn if (rootlogin && fflag == 0) 69023985Sdavidn { 69123985Sdavidn if (hostname) 69223985Sdavidn syslog(LOG_NOTICE, "ROOT LOGIN (%s) ON %s FROM %s", 69323985Sdavidn username, tty, full_hostname); 69423985Sdavidn else 69523985Sdavidn syslog(LOG_NOTICE, "ROOT LOGIN (%s) ON %s", 69623985Sdavidn username, tty); 69723985Sdavidn } 69823985Sdavidn 69923985Sdavidn /* 70023985Sdavidn * Destroy environment unless user has requested its preservation. 70123985Sdavidn * We need to do this before setusercontext() because that may 70223985Sdavidn * set or reset some environment variables. 70323985Sdavidn */ 70421528Sdavidn if (!pflag) 70521528Sdavidn environ = envinit; 70621528Sdavidn 70723985Sdavidn /* 70823985Sdavidn * We don't need to be root anymore, so 70921528Sdavidn * set the user and session context 71021528Sdavidn */ 71121528Sdavidn#ifdef LOGIN_CAP 71221528Sdavidn if (setusercontext(lc, pwd, pwd->pw_uid, LOGIN_SETALL) != 0) { 71321528Sdavidn syslog(LOG_ERR, "setusercontext() failed - exiting"); 71421528Sdavidn exit(1); 7153205Spst } 71621528Sdavidn#else 71721528Sdavidn if (setlogin(pwd->pw_name) < 0) 71821528Sdavidn syslog(LOG_ERR, "setlogin() failure: %m"); 71921528Sdavidn 72021528Sdavidn (void)setgid(pwd->pw_gid); 72121528Sdavidn initgroups(username, pwd->pw_gid); 72221528Sdavidn (void)setuid(rootlogin ? 0 : pwd->pw_uid); 7233205Spst#endif 7243205Spst 72523148Sache (void)setenv("SHELL", pwd->pw_shell, 1); 72621528Sdavidn (void)setenv("HOME", pwd->pw_dir, 1); 72723985Sdavidn if (term != NULL && *term != '\0') 72821528Sdavidn (void)setenv("TERM", term, 1); /* Preset overrides */ 72921528Sdavidn else { 73023985Sdavidn (void)setenv("TERM", stypeof(tty), 0); /* Fallback doesn't */ 73121528Sdavidn } 73221528Sdavidn (void)setenv("LOGNAME", pwd->pw_name, 1); 73321528Sdavidn (void)setenv("USER", pwd->pw_name, 1); 73421528Sdavidn (void)setenv("PATH", rootlogin ? _PATH_STDPATH : _PATH_DEFPATH, 0); 73521528Sdavidn#ifdef KERBEROS 73621528Sdavidn if (krbtkfile_env) 73721528Sdavidn (void)setenv("KRBTKFILE", krbtkfile_env, 1); 73821528Sdavidn#endif 73923985Sdavidn#if LOGIN_CAP_AUTH 74023985Sdavidn auth_env(); 74121528Sdavidn#endif 74221528Sdavidn 74323985Sdavidn#ifdef LOGIN_CAP 7441590Srgrimes if (!quietlog) { 74523985Sdavidn char *cw; 74623985Sdavidn 74723985Sdavidn cw = login_getcapstr(lc, "copyright", NULL, NULL); 74821528Sdavidn if (cw != NULL && access(cw, F_OK) == 0) 74921528Sdavidn motd(cw); 75021528Sdavidn else 75123985Sdavidn (void)printf("%s\n\t%s %s\n", 75223985Sdavidn "Copyright (c) 1980, 1983, 1986, 1988, 1990, 1991, 1993, 1994", 75323985Sdavidn "The Regents of the University of California. ", 75423985Sdavidn "All rights reserved."); 75523985Sdavidn 75623985Sdavidn (void)printf("\n"); 75723985Sdavidn 75821528Sdavidn cw = login_getcapstr(lc, "welcome", NULL, NULL); 75921528Sdavidn if (cw == NULL || access(cw, F_OK) != 0) 76021528Sdavidn cw = _PATH_MOTDFILE; 76121528Sdavidn motd(cw); 76223985Sdavidn 76321528Sdavidn cw = getenv("MAIL"); /* $MAIL may have been set by class */ 76421528Sdavidn if (cw != NULL) { 76521528Sdavidn strncpy(tbuf, cw, sizeof(tbuf)); 76621528Sdavidn tbuf[sizeof(tbuf)-1] = '\0'; 76721528Sdavidn } else 76823985Sdavidn snprintf(tbuf, sizeof(tbuf), "%s/%s", 76923985Sdavidn _PATH_MAILDIR, pwd->pw_name); 77021528Sdavidn#else 77123985Sdavidn if (!quietlog) { 77223985Sdavidn (void)printf("%s\n\t%s %s\n", 77323985Sdavidn "Copyright (c) 1980, 1983, 1986, 1988, 1990, 1991, 1993, 1994", 77423985Sdavidn "The Regents of the University of California. ", 77523985Sdavidn "All rights reserved."); 77621528Sdavidn motd(_PATH_MOTDFILE); 77723985Sdavidn snprintf(tbuf, sizeof(tbuf), "%s/%s", 77823985Sdavidn _PATH_MAILDIR, pwd->pw_name); 77921528Sdavidn#endif 7801590Srgrimes if (stat(tbuf, &st) == 0 && st.st_size != 0) 78123985Sdavidn (void)printf("You have %smail.\n", 78223985Sdavidn (st.st_mtime > st.st_atime) ? "new " : ""); 7831590Srgrimes } 7841590Srgrimes 78521528Sdavidn#ifdef LOGIN_CAP 78621528Sdavidn login_close(lc); 7873205Spst#endif 7883205Spst 7891590Srgrimes (void)signal(SIGALRM, SIG_DFL); 7901590Srgrimes (void)signal(SIGQUIT, SIG_DFL); 7911590Srgrimes (void)signal(SIGINT, SIG_DFL); 7921590Srgrimes (void)signal(SIGTSTP, SIG_IGN); 7931590Srgrimes 7944878Sugen if (changepass) { 79521528Sdavidn if (system(_PATH_CHPASS) != 0) 7964878Sugen sleepexit(1); 7974878Sugen } 7984878Sugen 79923985Sdavidn /* 80023985Sdavidn * Login shells have a leading '-' in front of argv[0] 80123985Sdavidn */ 80223985Sdavidn tbuf[0] = '-'; 80323985Sdavidn (void)strcpy(tbuf + 1, (p = strrchr(pwd->pw_shell, '/')) ? p + 1 : pwd->pw_shell); 80423985Sdavidn 80521528Sdavidn execlp(shell, tbuf, 0); 80621528Sdavidn err(1, "%s", shell); 8071590Srgrimes} 8081590Srgrimes 80927605Scharnierstatic void 81027605Scharnierusage() 81127605Scharnier{ 81227605Scharnier (void)fprintf(stderr, "usage: login [-fp] [-h hostname] [username]\n"); 81327605Scharnier exit(1); 81427605Scharnier} 8151590Srgrimes 81623985Sdavidn/* 81723985Sdavidn * Allow for authentication style and/or kerberos instance 81823985Sdavidn * */ 81921528Sdavidn 82021528Sdavidn#define NBUFSIZ UT_NAMESIZE + 64 82121528Sdavidn 8221590Srgrimesvoid 8231590Srgrimesgetloginname() 8241590Srgrimes{ 8251590Srgrimes int ch; 8261590Srgrimes char *p; 8271590Srgrimes static char nbuf[NBUFSIZ]; 8281590Srgrimes 8291590Srgrimes for (;;) { 8301590Srgrimes (void)printf("login: "); 8311590Srgrimes for (p = nbuf; (ch = getchar()) != '\n'; ) { 8321590Srgrimes if (ch == EOF) { 8331590Srgrimes badlogin(username); 8341590Srgrimes exit(0); 8351590Srgrimes } 8361590Srgrimes if (p < nbuf + (NBUFSIZ - 1)) 8371590Srgrimes *p++ = ch; 8381590Srgrimes } 8391590Srgrimes if (p > nbuf) 8401590Srgrimes if (nbuf[0] == '-') 8411590Srgrimes (void)fprintf(stderr, 8421590Srgrimes "login names may not start with '-'.\n"); 8431590Srgrimes else { 8441590Srgrimes *p = '\0'; 8451590Srgrimes username = nbuf; 8461590Srgrimes break; 8471590Srgrimes } 8481590Srgrimes } 8491590Srgrimes} 8501590Srgrimes 8511590Srgrimesint 8521590Srgrimesrootterm(ttyn) 8531590Srgrimes char *ttyn; 8541590Srgrimes{ 8551590Srgrimes struct ttyent *t; 85623985Sdavidn 8571590Srgrimes return ((t = getttynam(ttyn)) && t->ty_status & TTY_SECURE); 8581590Srgrimes} 8591590Srgrimes 86021528Sdavidnvolatile int motdinterrupt; 8611590Srgrimes 86221528Sdavidn/* ARGSUSED */ 8631590Srgrimesvoid 86421528Sdavidnsigint(signo) 86521528Sdavidn int signo; 8661590Srgrimes{ 86721528Sdavidn motdinterrupt = 1; 86821528Sdavidn} 86921528Sdavidn 87021528Sdavidnvoid 87121528Sdavidnmotd(motdfile) 87221528Sdavidn char *motdfile; 87321528Sdavidn{ 8741590Srgrimes int fd, nchars; 8751590Srgrimes sig_t oldint; 87621528Sdavidn char tbuf[256]; 8771590Srgrimes 87821528Sdavidn if ((fd = open(motdfile, O_RDONLY, 0)) < 0) 8791590Srgrimes return; 88021528Sdavidn motdinterrupt = 0; 8811590Srgrimes oldint = signal(SIGINT, sigint); 88221528Sdavidn while ((nchars = read(fd, tbuf, sizeof(tbuf))) > 0 && !motdinterrupt) 88321528Sdavidn (void)write(fileno(stdout), tbuf, nchars); 8841590Srgrimes (void)signal(SIGINT, oldint); 8851590Srgrimes (void)close(fd); 8861590Srgrimes} 8871590Srgrimes 8881590Srgrimes/* ARGSUSED */ 8891590Srgrimesvoid 8901590Srgrimestimedout(signo) 8911590Srgrimes int signo; 8921590Srgrimes{ 8931590Srgrimes (void)fprintf(stderr, "Login timed out after %d seconds\n", timeout); 8941590Srgrimes exit(0); 8951590Srgrimes} 8961590Srgrimes 89721528Sdavidn#ifndef LOGIN_CAP 8981590Srgrimesvoid 8991590Srgrimeschecknologin() 9001590Srgrimes{ 9011590Srgrimes int fd, nchars; 9021590Srgrimes char tbuf[8192]; 9031590Srgrimes 9041590Srgrimes if ((fd = open(_PATH_NOLOGIN, O_RDONLY, 0)) >= 0) { 9051590Srgrimes while ((nchars = read(fd, tbuf, sizeof(tbuf))) > 0) 9061590Srgrimes (void)write(fileno(stdout), tbuf, nchars); 9071590Srgrimes sleepexit(0); 9081590Srgrimes } 9091590Srgrimes} 91021528Sdavidn#endif 9111590Srgrimes 9121590Srgrimesvoid 9131590Srgrimesdolastlog(quiet) 9141590Srgrimes int quiet; 9151590Srgrimes{ 9161590Srgrimes struct lastlog ll; 9171590Srgrimes int fd; 9181590Srgrimes 9191590Srgrimes if ((fd = open(_PATH_LASTLOG, O_RDWR, 0)) >= 0) { 9201590Srgrimes (void)lseek(fd, (off_t)pwd->pw_uid * sizeof(ll), L_SET); 9211590Srgrimes if (!quiet) { 9221590Srgrimes if (read(fd, (char *)&ll, sizeof(ll)) == sizeof(ll) && 9231590Srgrimes ll.ll_time != 0) { 9241590Srgrimes (void)printf("Last login: %.*s ", 9251590Srgrimes 24-5, (char *)ctime(&ll.ll_time)); 9261590Srgrimes if (*ll.ll_host != '\0') 9271590Srgrimes (void)printf("from %.*s\n", 9281590Srgrimes (int)sizeof(ll.ll_host), 9291590Srgrimes ll.ll_host); 9301590Srgrimes else 9311590Srgrimes (void)printf("on %.*s\n", 9321590Srgrimes (int)sizeof(ll.ll_line), 9331590Srgrimes ll.ll_line); 9341590Srgrimes } 9351590Srgrimes (void)lseek(fd, (off_t)pwd->pw_uid * sizeof(ll), L_SET); 9361590Srgrimes } 9371590Srgrimes memset((void *)&ll, 0, sizeof(ll)); 9381590Srgrimes (void)time(&ll.ll_time); 9391590Srgrimes (void)strncpy(ll.ll_line, tty, sizeof(ll.ll_line)); 9401590Srgrimes if (hostname) 9411590Srgrimes (void)strncpy(ll.ll_host, hostname, sizeof(ll.ll_host)); 9421590Srgrimes (void)write(fd, (char *)&ll, sizeof(ll)); 9431590Srgrimes (void)close(fd); 9441590Srgrimes } 9451590Srgrimes} 9461590Srgrimes 9471590Srgrimesvoid 9481590Srgrimesbadlogin(name) 9491590Srgrimes char *name; 9501590Srgrimes{ 9511590Srgrimes 9521590Srgrimes if (failures == 0) 9531590Srgrimes return; 9541590Srgrimes if (hostname) { 9551590Srgrimes syslog(LOG_NOTICE, "%d LOGIN FAILURE%s FROM %s", 95616423Sache failures, failures > 1 ? "S" : "", full_hostname); 9571590Srgrimes syslog(LOG_AUTHPRIV|LOG_NOTICE, 9581590Srgrimes "%d LOGIN FAILURE%s FROM %s, %s", 95916423Sache failures, failures > 1 ? "S" : "", full_hostname, name); 9601590Srgrimes } else { 9611590Srgrimes syslog(LOG_NOTICE, "%d LOGIN FAILURE%s ON %s", 9621590Srgrimes failures, failures > 1 ? "S" : "", tty); 9631590Srgrimes syslog(LOG_AUTHPRIV|LOG_NOTICE, 9641590Srgrimes "%d LOGIN FAILURE%s ON %s, %s", 9651590Srgrimes failures, failures > 1 ? "S" : "", tty, name); 9661590Srgrimes } 9671590Srgrimes} 9681590Srgrimes 9691590Srgrimes#undef UNKNOWN 9701590Srgrimes#define UNKNOWN "su" 9711590Srgrimes 9721590Srgrimeschar * 9731590Srgrimesstypeof(ttyid) 9741590Srgrimes char *ttyid; 9751590Srgrimes{ 97623985Sdavidn 9771590Srgrimes struct ttyent *t; 97823985Sdavidn 9791590Srgrimes return (ttyid && (t = getttynam(ttyid)) ? t->ty_type : UNKNOWN); 9801590Srgrimes} 9811590Srgrimes 9821590Srgrimesvoid 98323985Sdavidnrefused(msg, rtype, lout) 98423985Sdavidn char *msg; 98523985Sdavidn char *rtype; 98623985Sdavidn int lout; 98723985Sdavidn{ 98823985Sdavidn 98923985Sdavidn if (msg != NULL) 99023985Sdavidn printf("%s.\n", msg); 99123985Sdavidn if (hostname) 99223985Sdavidn syslog(LOG_NOTICE, "LOGIN %s REFUSED (%s) FROM %s ON TTY %s", 99323985Sdavidn pwd->pw_name, rtype, full_hostname, tty); 99423985Sdavidn else 99523985Sdavidn syslog(LOG_NOTICE, "LOGIN %s REFUSED (%s) ON TTY %s", 99623985Sdavidn pwd->pw_name, rtype, tty); 99723985Sdavidn if (lout) 99823985Sdavidn sleepexit(1); 99923985Sdavidn} 100023985Sdavidn 100123985Sdavidnvoid 10021590Srgrimessleepexit(eval) 10031590Srgrimes int eval; 10041590Srgrimes{ 100523985Sdavidn 10061590Srgrimes (void)sleep(5); 10071590Srgrimes exit(eval); 10081590Srgrimes} 1009