login.c revision 23985
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 411590Srgrimesstatic char sccsid[] = "@(#)login.c 8.4 (Berkeley) 4/2/94"; 421590Srgrimes#endif /* not lint */ 431590Srgrimes 441590Srgrimes/* 451590Srgrimes * login [ name ] 461590Srgrimes * login -h hostname (for telnetd, etc.) 471590Srgrimes * login -f name (for pre-authenticated login: datakit, xterm, etc.) 481590Srgrimes */ 491590Srgrimes 5023246Swosch#include <sys/copyright.h> 511590Srgrimes#include <sys/param.h> 521590Srgrimes#include <sys/stat.h> 531590Srgrimes#include <sys/time.h> 541590Srgrimes#include <sys/resource.h> 551590Srgrimes#include <sys/file.h> 5616423Sache#include <netinet/in.h> 5716423Sache#include <arpa/inet.h> 581590Srgrimes 591590Srgrimes#include <err.h> 601590Srgrimes#include <errno.h> 611590Srgrimes#include <grp.h> 6216423Sache#include <netdb.h> 631590Srgrimes#include <pwd.h> 641590Srgrimes#include <setjmp.h> 651590Srgrimes#include <signal.h> 661590Srgrimes#include <stdio.h> 671590Srgrimes#include <stdlib.h> 681590Srgrimes#include <string.h> 691590Srgrimes#include <syslog.h> 701590Srgrimes#include <ttyent.h> 711590Srgrimes#include <unistd.h> 721590Srgrimes#include <utmp.h> 731590Srgrimes 7421528Sdavidn#ifdef LOGIN_CAP 7521528Sdavidn#include <login_cap.h> 7621528Sdavidn#else /* Undef AUTH as well */ 7721528Sdavidn#undef LOGIN_CAP_AUTH 7821528Sdavidn#endif 7921528Sdavidn 8023985Sdavidn/* 8123985Sdavidn * If LOGIN_CAP_AUTH is activated: 8221528Sdavidn * kerberose & skey logins are runtime selected via login 8321528Sdavidn * login_getstyle() and authentication types for login classes 8421528Sdavidn * The actual login itself is handled via /usr/libexec/login_<style> 8521528Sdavidn * Valid styles are determined by the auth-type=style,style entries 8621528Sdavidn * in the login class. 8721528Sdavidn */ 8821528Sdavidn#ifdef LOGIN_CAP_AUTH 8921528Sdavidn#undef KERBEROS 9021528Sdavidn#undef SKEY 9123985Sdavidn#endif /* LOGIN_CAP_AUTH */ 9223985Sdavidn 933702Spst#ifdef SKEY 943702Spst#include <skey.h> 9521528Sdavidn#endif /* SKEY */ 963702Spst 971590Srgrimes#include "pathnames.h" 981590Srgrimes 991590Srgrimesvoid badlogin __P((char *)); 1001590Srgrimesvoid checknologin __P((void)); 1011590Srgrimesvoid dolastlog __P((int)); 1021590Srgrimesvoid getloginname __P((void)); 10321528Sdavidnvoid motd __P((char *)); 1041590Srgrimesint rootterm __P((char *)); 1051590Srgrimesvoid sigint __P((int)); 1061590Srgrimesvoid sleepexit __P((int)); 10723985Sdavidnvoid refused __P((char *,char *,int)); 1081590Srgrimeschar *stypeof __P((char *)); 1091590Srgrimesvoid timedout __P((int)); 1102224Sguidovoid login_fbtab __P((char *, uid_t, gid_t)); 1111590Srgrimes#ifdef KERBEROS 1121590Srgrimesint klogin __P((struct passwd *, char *, char *, char *)); 1131590Srgrimes#endif 1141590Srgrimes 1151590Srgrimesextern void login __P((struct utmp *)); 1161590Srgrimes 1171590Srgrimes#define TTYGRPNAME "tty" /* name of group to own ttys */ 11823985Sdavidn#define DEFAULT_BACKOFF 3 11923985Sdavidn#define DEFAULT_RETRIES 10 1201590Srgrimes 1211590Srgrimes/* 1221590Srgrimes * This bounds the time given to login. Not a define so it can 1231590Srgrimes * be patched on machines where it's too small. 1241590Srgrimes */ 1251590Srgrimesu_int timeout = 300; 1261590Srgrimes 1271590Srgrimes#ifdef KERBEROS 1281590Srgrimesint notickets = 1; 1295627Swollmanint noticketsdontcomplain = 1; 1301590Srgrimeschar *instance; 1311590Srgrimeschar *krbtkfile_env; 1321590Srgrimesint authok; 1331590Srgrimes#endif 1341590Srgrimes 1351590Srgrimesstruct passwd *pwd; 1361590Srgrimesint failures; 13723985Sdavidnchar *term, *envinit[1], *hostname, *username, *tty; 13816423Sachechar full_hostname[MAXHOSTNAMELEN]; 1391590Srgrimes 1401590Srgrimesint 1411590Srgrimesmain(argc, argv) 1421590Srgrimes int argc; 1431590Srgrimes char *argv[]; 1441590Srgrimes{ 1451590Srgrimes extern char **environ; 1461590Srgrimes struct group *gr; 1471590Srgrimes struct stat st; 1481590Srgrimes struct timeval tp; 1491590Srgrimes struct utmp utmp; 15023985Sdavidn int rootok, retries, backoff; 1511590Srgrimes int ask, ch, cnt, fflag, hflag, pflag, quietlog, rootlogin, rval; 1524878Sugen int changepass; 15323985Sdavidn time_t warntime; 1541590Srgrimes uid_t uid; 1553205Spst char *domain, *p, *ep, *salt, *ttyn; 1561590Srgrimes char tbuf[MAXPATHLEN + 2], tname[sizeof(_PATH_TTY) + 10]; 1571590Srgrimes char localhost[MAXHOSTNAMELEN]; 15823985Sdavidn char *shell = NULL; 15921528Sdavidn#ifdef LOGIN_CAP 16021528Sdavidn login_cap_t *lc = NULL; 16121528Sdavidn#ifdef LOGIN_CAP_AUTH 16221528Sdavidn char *style, *authtype; 16321528Sdavidn char *auth_method = NULL; 16421528Sdavidn char *instance = NULL; 16521528Sdavidn int authok; 16623985Sdavidn#endif /* LOGIN_CAP_AUTH */ 16723985Sdavidn#endif /* LOGIN_CAP */ 16821528Sdavidn#ifdef SKEY 1693205Spst int permit_passwd = 0; 17021528Sdavidn#endif /* SKEY */ 1711590Srgrimes 1721590Srgrimes (void)signal(SIGALRM, timedout); 1731590Srgrimes (void)alarm(timeout); 1741590Srgrimes (void)signal(SIGQUIT, SIG_IGN); 1751590Srgrimes (void)signal(SIGINT, SIG_IGN); 1761590Srgrimes (void)setpriority(PRIO_PROCESS, 0, 0); 1771590Srgrimes 1781590Srgrimes openlog("login", LOG_ODELAY, LOG_AUTH); 1791590Srgrimes 1801590Srgrimes /* 1811590Srgrimes * -p is used by getty to tell login not to destroy the environment 1821590Srgrimes * -f is used to skip a second login authentication 1831590Srgrimes * -h is used by other servers to pass the name of the remote 1841590Srgrimes * host to login so that it may be placed in utmp and wtmp 1851590Srgrimes */ 1863205Spst *full_hostname = '\0'; 1871590Srgrimes domain = NULL; 18823985Sdavidn term = NULL; 1891590Srgrimes if (gethostname(localhost, sizeof(localhost)) < 0) 1901590Srgrimes syslog(LOG_ERR, "couldn't get local hostname: %m"); 1911590Srgrimes else 1921590Srgrimes domain = strchr(localhost, '.'); 1931590Srgrimes 1941590Srgrimes fflag = hflag = pflag = 0; 1951590Srgrimes uid = getuid(); 1961590Srgrimes while ((ch = getopt(argc, argv, "fh:p")) != EOF) 1971590Srgrimes switch (ch) { 1981590Srgrimes case 'f': 1991590Srgrimes fflag = 1; 2001590Srgrimes break; 2011590Srgrimes case 'h': 2021590Srgrimes if (uid) 2031590Srgrimes errx(1, "-h option: %s", strerror(EPERM)); 2041590Srgrimes hflag = 1; 2053205Spst strncpy(full_hostname, optarg, sizeof(full_hostname)-1); 2061590Srgrimes if (domain && (p = strchr(optarg, '.')) && 2071590Srgrimes strcasecmp(p, domain) == 0) 2081590Srgrimes *p = 0; 20916423Sache if (strlen(optarg) > UT_HOSTSIZE) { 21016423Sache struct hostent *hp = gethostbyname(optarg); 21116423Sache 21216423Sache if (hp != NULL) { 21316423Sache struct in_addr in; 21416423Sache 21516423Sache memmove(&in, hp->h_addr, sizeof(in)); 21616423Sache optarg = strdup(inet_ntoa(in)); 21716423Sache } else 21816423Sache optarg = "invalid hostname"; 21916423Sache } 2201590Srgrimes hostname = optarg; 2211590Srgrimes break; 2221590Srgrimes case 'p': 2231590Srgrimes pflag = 1; 2241590Srgrimes break; 2251590Srgrimes case '?': 2261590Srgrimes default: 2271590Srgrimes if (!uid) 2281590Srgrimes syslog(LOG_ERR, "invalid flag %c", ch); 2291590Srgrimes (void)fprintf(stderr, 2301590Srgrimes "usage: login [-fp] [-h hostname] [username]\n"); 2311590Srgrimes exit(1); 2321590Srgrimes } 2331590Srgrimes argc -= optind; 2341590Srgrimes argv += optind; 2351590Srgrimes 2361590Srgrimes if (*argv) { 2371590Srgrimes username = *argv; 2381590Srgrimes ask = 0; 2391590Srgrimes } else 2401590Srgrimes ask = 1; 2411590Srgrimes 2421590Srgrimes for (cnt = getdtablesize(); cnt > 2; cnt--) 2431590Srgrimes (void)close(cnt); 2441590Srgrimes 2451590Srgrimes ttyn = ttyname(STDIN_FILENO); 2461590Srgrimes if (ttyn == NULL || *ttyn == '\0') { 2471590Srgrimes (void)snprintf(tname, sizeof(tname), "%s??", _PATH_TTY); 2481590Srgrimes ttyn = tname; 2491590Srgrimes } 25023985Sdavidn if ((tty = strrchr(ttyn, '/')) != NULL) 2511590Srgrimes ++tty; 2521590Srgrimes else 2531590Srgrimes tty = ttyn; 2541590Srgrimes 25521528Sdavidn#ifdef LOGIN_CAP_AUTH 25621528Sdavidn authtype = hostname ? "rlogin" : "login"; 25721528Sdavidn#endif 25823985Sdavidn#ifdef LOGIN_CAP 25923985Sdavidn /* 26023985Sdavidn * Get "login-retries" & "login-backoff" from default class 26123985Sdavidn */ 26223985Sdavidn lc = login_getclass(NULL); 26323985Sdavidn retries = login_getcapnum(lc, "login-retries", DEFAULT_RETRIES, DEFAULT_RETRIES); 26423985Sdavidn backoff = login_getcapnum(lc, "login-backoff", DEFAULT_BACKOFF, DEFAULT_BACKOFF); 26523985Sdavidn login_close(lc); 26623985Sdavidn lc = NULL; 26723985Sdavidn#else 26823985Sdavidn retries = DEFAULT_RETRIES; 26923985Sdavidn backoff = DEFAULT_BACKOFF; 27023985Sdavidn#endif 27121528Sdavidn 2721590Srgrimes for (cnt = 0;; ask = 1) { 2731590Srgrimes if (ask) { 2741590Srgrimes fflag = 0; 2751590Srgrimes getloginname(); 2761590Srgrimes } 2771590Srgrimes rootlogin = 0; 27821528Sdavidn rootok = rootterm(tty); /* Default (auth may change) */ 27921528Sdavidn#ifdef LOGIN_CAP_AUTH 28021528Sdavidn authok = 0; 28121528Sdavidn if (auth_method = strchr(username, ':')) { 28221528Sdavidn *auth_method = '\0'; 28321528Sdavidn auth_method++; 28421528Sdavidn if (*auth_method == '\0') 28521528Sdavidn auth_method = NULL; 28621528Sdavidn } 28721528Sdavidn /* 28821528Sdavidn * We need to do this regardless of whether 28921528Sdavidn * kerberos is available. 29021528Sdavidn */ 2911590Srgrimes if ((instance = strchr(username, '.')) != NULL) { 2921590Srgrimes if (strncmp(instance, ".root", 5) == 0) 2931590Srgrimes rootlogin = 1; 2941590Srgrimes *instance++ = '\0'; 2951590Srgrimes } else 2961590Srgrimes instance = ""; 29721528Sdavidn#else /* !LOGIN_CAP_AUTH */ 29821528Sdavidn#ifdef KERBEROS 29921528Sdavidn if ((instance = strchr(username, '.')) != NULL) { 30021528Sdavidn if (strncmp(instance, ".root", 5) == 0) 30121528Sdavidn rootlogin = 1; 30221528Sdavidn *instance++ = '\0'; 30321528Sdavidn } else 30421528Sdavidn instance = ""; 30521528Sdavidn#endif /* KERBEROS */ 30621528Sdavidn#endif /* LOGIN_CAP_AUTH */ 30721528Sdavidn 3081590Srgrimes if (strlen(username) > UT_NAMESIZE) 3091590Srgrimes username[UT_NAMESIZE] = '\0'; 3101590Srgrimes 3111590Srgrimes /* 3121590Srgrimes * Note if trying multiple user names; log failures for 3131590Srgrimes * previous user name, but don't bother logging one failure 3141590Srgrimes * for nonexistent name (mistyped username). 3151590Srgrimes */ 3161590Srgrimes if (failures && strcmp(tbuf, username)) { 3171590Srgrimes if (failures > (pwd ? 0 : 1)) 3181590Srgrimes badlogin(tbuf); 3191590Srgrimes failures = 0; 3201590Srgrimes } 3211590Srgrimes (void)strcpy(tbuf, username); 3221590Srgrimes 32323985Sdavidn if ((pwd = getpwnam(username)) != NULL) 32423985Sdavidn salt = pwd->pw_passwd; 32523985Sdavidn else 32623985Sdavidn salt = "xx"; 32723985Sdavidn 32821528Sdavidn#ifdef LOGIN_CAP 32923985Sdavidn /* 33023985Sdavidn * Establish the class now, before we might goto 33121528Sdavidn * within the next block. pwd can be NULL since it 33221528Sdavidn * falls back to the "default" class if it is. 33321528Sdavidn */ 33421528Sdavidn lc = login_getclass(pwd); 33521528Sdavidn#endif /* LOGIN_CAP */ 3361590Srgrimes 3371590Srgrimes /* 3381590Srgrimes * if we have a valid account name, and it doesn't have a 3391590Srgrimes * password, or the -f option was specified and the caller 3401590Srgrimes * is root or the caller isn't changing their uid, don't 3411590Srgrimes * authenticate. 3421590Srgrimes */ 34323985Sdavidn rval = 1; 34421528Sdavidn if (pwd != NULL) { 3453205Spst if (pwd->pw_uid == 0) 3463205Spst rootlogin = 1; 3473205Spst 34823985Sdavidn if (fflag && (uid == (uid_t)0 || 34923985Sdavidn uid == (uid_t)pwd->pw_uid)) { 3503205Spst /* already authenticated */ 3513205Spst break; 3523205Spst } else if (pwd->pw_passwd[0] == '\0') { 3533205Spst /* pretend password okay */ 3543205Spst rval = 0; 3553205Spst goto ttycheck; 3563205Spst } 3573205Spst } 3583205Spst 3591590Srgrimes fflag = 0; 3601590Srgrimes 3611590Srgrimes (void)setpriority(PRIO_PROCESS, 0, -4); 3621590Srgrimes 36321528Sdavidn#ifdef LOGIN_CAP_AUTH 36421528Sdavidn /* 36523985Sdavidn * This hands off authorization to an authorization program, 36621528Sdavidn * depending on the styles available for the "auth-login", 36723985Sdavidn * auth-rlogin (or default) authorization styles. 36821528Sdavidn * We do this regardless of whether an account exists so that 36921528Sdavidn * the remote user cannot tell a "real" from an invented 37021528Sdavidn * account name. If we don't have an account we just fall 37121528Sdavidn * back to the first method for the "default" class. 37221528Sdavidn */ 37323985Sdavidn if (!(style = login_getstyle(lc, auth_method, authtype))) { 37423985Sdavidn 37523985Sdavidn /* 37623985Sdavidn * No available authorization method 37723985Sdavidn */ 37823985Sdavidn rval = 1; 37923985Sdavidn (void)printf("No auth method available for %s.\n", 38023985Sdavidn authtype); 38121528Sdavidn } else { 38223985Sdavidn 38323985Sdavidn /* 38423985Sdavidn * Put back the kerberos instance, if any was given. 38521528Sdavidn * Don't worry about the non-kerberos case here, since 38621528Sdavidn * if kerberos is not available or not selected and an 38721528Sdavidn * instance is given at the login prompt, su or rlogin -l, 38821528Sdavidn * then anything else should fail as well. 38921528Sdavidn */ 39021528Sdavidn if (*instance) 39121528Sdavidn *(instance - 1) = '.'; 39223985Sdavidn 39323985Sdavidn rval = authenticate(username, 39423985Sdavidn lc ? lc->lc_class : "default", 39523985Sdavidn style, authtype); 39621528Sdavidn /* Junk it again */ 39721528Sdavidn if (*instance) 39821528Sdavidn *(instance - 1) = '\0'; 39921528Sdavidn } 40021528Sdavidn 40121528Sdavidn if (!rval) { 40223985Sdavidn char * approvp; 40323985Sdavidn 40421528Sdavidn /* 40521528Sdavidn * If authentication succeeds, run any approval 40621528Sdavidn * program, if applicable for this class. 40721528Sdavidn */ 40823985Sdavidn approvep = login_getcapstr(lc, "approve", NULL, NULL); 40921528Sdavidn rval = 1; /* Assume bad login again */ 41023985Sdavidn 41123985Sdavidn if (approvep==NULL || 41223985Sdavidn auth_script(approvep, approvep, username, 41323985Sdavidn lc->lc_class, 0) == 0) { 41423985Sdavidn int r; 41523985Sdavidn 41623985Sdavidn r = auth_scan(AUTH_OKAY); 41723985Sdavidn /* 41823985Sdavidn * See what the authorize program says 41923985Sdavidn */ 42021528Sdavidn if (r != AUTH_NONE) { 42121528Sdavidn rval = 0; 42223985Sdavidn 42321528Sdavidn if (!rootok && (r & AUTH_ROOTOKAY)) 42421528Sdavidn rootok = 1; /* root approved */ 42523985Sdavidn else 42623985Sdavidn rootlogin = 0; 42723985Sdavidn 42821528Sdavidn if (!authok && (r & AUTH_SECURE)) 42921528Sdavidn authok = 1; /* secure */ 43021528Sdavidn } 43121528Sdavidn } 43221528Sdavidn } 43321528Sdavidn#else /* !LOGIN_CAP_AUTH */ 43421528Sdavidn#ifdef SKEY 43523985Sdavidn permit_passwd = skeyaccess(username, tty, 43623985Sdavidn hostname ? full_hostname : NULL, 43723985Sdavidn NULL); 4383205Spst p = skey_getpass("Password:", pwd, permit_passwd); 4393205Spst ep = skey_crypt(p, salt, pwd, permit_passwd); 44021528Sdavidn#else /* !SKEY */ 4411590Srgrimes p = getpass("Password:"); 4423205Spst ep = crypt(p, salt); 44321528Sdavidn#endif/* SKEY */ 44423985Sdavidn 44523985Sdavidn if (pwd) { 4461590Srgrimes#ifdef KERBEROS 4477800Swollman#ifdef SKEY 44823985Sdavidn /* 44923985Sdavidn * Do not allow user to type in kerberos password 4507800Swollman * over the net (actually, this is ok for encrypted 4517800Swollman * links, but we have no way of determining if the 4527800Swollman * link is encrypted. 4537800Swollman */ 4547893Srgrimes if (!permit_passwd) { 45523985Sdavidn rval = 1; /* failed */ 4567800Swollman } else 45721528Sdavidn#endif /* SKEY */ 4581590Srgrimes rval = klogin(pwd, instance, localhost, p); 4591590Srgrimes if (rval != 0 && rootlogin && pwd->pw_uid != 0) 4601590Srgrimes rootlogin = 0; 4611590Srgrimes if (rval == 0) 46221528Sdavidn authok = 1; /* kerberos authenticated ok */ 46321528Sdavidn else if (rval == 1) /* fallback to unix passwd */ 4643205Spst rval = strcmp(ep, pwd->pw_passwd); 46521528Sdavidn#else /* !KERBEROS */ 46623985Sdavidn rval = strcmp(ep, pwd->pw_passwd); 46721528Sdavidn#endif /* KERBEROS */ 46823985Sdavidn } 46923985Sdavidn 47021528Sdavidn /* clear entered password */ 4711590Srgrimes memset(p, 0, strlen(p)); 47221528Sdavidn#endif /* LOGIN_CAP_AUTH */ 4731590Srgrimes 4741590Srgrimes (void)setpriority(PRIO_PROCESS, 0, 0); 47523985Sdavidn 47621528Sdavidn#ifdef LOGIN_CAP 47721528Sdavidn if (rval) 47821528Sdavidn auth_rmfiles(); 47921528Sdavidn#endif 4803205Spst ttycheck: 4811590Srgrimes /* 4821590Srgrimes * If trying to log in as root without Kerberos, 4831590Srgrimes * but with insecure terminal, refuse the login attempt. 4841590Srgrimes */ 48521528Sdavidn#if defined(KERBEROS) || defined(LOGIN_CAP_AUTH) 4861590Srgrimes if (authok == 0) 4871590Srgrimes#endif 48821528Sdavidn if (pwd && !rval && rootlogin && !rootok) { 48923985Sdavidn /* use same message as for authentication failure */ 49023985Sdavidn /* (void)fprintf(stderr, "%s login refused on this terminal.\n", pwd->pw_name); */ 49123985Sdavidn refused(NULL, "NOROOT", 0); 49223985Sdavidn /* preserve backoff behaviour even for failed root */ 49323985Sdavidn /* continue; */ 4941590Srgrimes } 49523985Sdavidn /* valid password & authenticated */ 49623985Sdavidn else if (pwd && !rval) 4971590Srgrimes break; 4981590Srgrimes 4991590Srgrimes (void)printf("Login incorrect\n"); 5001590Srgrimes failures++; 50123985Sdavidn 50223985Sdavidn /* 50323985Sdavidn * we allow up to 'retry' (10) tries, 50423985Sdavidn * but after 'backoff' (3) we start backing off 50523985Sdavidn */ 50623985Sdavidn if (++cnt > backoff) { 50723985Sdavidn if (cnt >= retries) { 5081590Srgrimes badlogin(username); 5091590Srgrimes sleepexit(1); 5101590Srgrimes } 5111590Srgrimes sleep((u_int)((cnt - 3) * 5)); 5121590Srgrimes } 5131590Srgrimes } 5141590Srgrimes 5151590Srgrimes /* committed to login -- turn off timeout */ 5161590Srgrimes (void)alarm((u_int)0); 5171590Srgrimes 5181590Srgrimes endpwent(); 5191590Srgrimes 5201590Srgrimes /* if user not super-user, check for disabled logins */ 52121528Sdavidn#ifdef LOGIN_CAP 5221590Srgrimes if (!rootlogin) 52321528Sdavidn auth_checknologin(lc); 52421528Sdavidn#else 52521528Sdavidn if (!rootlogin) 5261590Srgrimes checknologin(); 52721528Sdavidn#endif 5281590Srgrimes 52921528Sdavidn#ifdef LOGIN_CAP 53021528Sdavidn quietlog = login_getcapbool(lc, "hushlogin", 0); 53121528Sdavidn#else 53221528Sdavidn quietlog = 0; 53321528Sdavidn#endif 53421528Sdavidn if (!*pwd->pw_dir || chdir(pwd->pw_dir) < 0) { 53521528Sdavidn#ifdef LOGIN_CAP 53623985Sdavidn if (login_getcapbool(lc, "requirehome", !rootlogin)) 53723985Sdavidn refused("Home directory not available", "HOMEDIR", 1); 53823985Sdavidn#endif 53921528Sdavidn if (chdir("/") < 0) { 54023985Sdavidn refused("Cannot find root directory", "ROOTDIR", 1); 5411590Srgrimes pwd->pw_dir = "/"; 54223985Sdavidn if (!quietlog || *pwd->pw_dir) 54323985Sdavidn printf("No home directory.\nLogging in with home = \"/\".\n"); 5441590Srgrimes } 54521528Sdavidn if (!quietlog) 54621528Sdavidn quietlog = access(_PATH_HUSHLOGIN, F_OK) == 0; 5471590Srgrimes 5481590Srgrimes if (pwd->pw_change || pwd->pw_expire) 5491590Srgrimes (void)gettimeofday(&tp, (struct timezone *)NULL); 5502532Sjkh 55121528Sdavidn#define DEFAULT_WARN (2L * 7L & 86400L) /* Two weeks */ 55221528Sdavidn 55323985Sdavidn#ifdef LOGIN_CAP 55423985Sdavidn warntime = login_getcaptime(lc, "warnpassword", 55523985Sdavidn DEFAULT_WARN, DEFAULT_WARN); 55623985Sdavidn#else 55723985Sdavidn warntime = DEFAULT_WARN; 55823985Sdavidn#endif 55923985Sdavidn 5604878Sugen changepass=0; 56121528Sdavidn if (pwd->pw_change) { 5621590Srgrimes if (tp.tv_sec >= pwd->pw_change) { 5631590Srgrimes (void)printf("Sorry -- your password has expired.\n"); 5644878Sugen changepass=1; 56523985Sdavidn syslog(LOG_INFO, 56623985Sdavidn "%s Password expired - forcing change", 56723985Sdavidn pwd->pw_name); 56823985Sdavidn } else if (pwd->pw_change - tp.tv_sec < warntime && !quietlog) 56923985Sdavidn (void)printf("Warning: your password expires on %s", 57023985Sdavidn ctime(&pwd->pw_change)); 57123985Sdavidn } 57223985Sdavidn } 57323985Sdavidn 57421528Sdavidn#ifdef LOGIN_CAP 57523985Sdavidn warntime = login_getcaptime(lc, "warnexpire", 57623985Sdavidn DEFAULT_WARN, DEFAULT_WARN); 57721528Sdavidn#else 57823985Sdavidn warntime = DEFAULT_WARN; 57921528Sdavidn#endif 58023985Sdavidn 58121528Sdavidn if (pwd->pw_expire) { 5821590Srgrimes if (tp.tv_sec >= pwd->pw_expire) { 58323985Sdavidn refused("Sorry -- your account has expired", 58423985Sdavidn "EXPIRED", 1); 58523985Sdavidn } else if (pwd->pw_expire - tp.tv_sec < warntime && !quietlog) 58623985Sdavidn (void)printf("Warning: your account expires on %s", 58723985Sdavidn ctime(&pwd->pw_expire)); 58821528Sdavidn } 5891590Srgrimes 59021528Sdavidn#ifdef LOGIN_CAP 59121528Sdavidn if (lc != NULL) { 59221528Sdavidn if (hostname) { 59321528Sdavidn struct hostent *hp = gethostbyname(full_hostname); 59421528Sdavidn 59521528Sdavidn if (hp == NULL) 59621528Sdavidn optarg = NULL; 59721528Sdavidn else { 59821528Sdavidn struct in_addr in; 59921528Sdavidn memmove(&in, hp->h_addr, sizeof(in)); 60021528Sdavidn optarg = strdup(inet_ntoa(in)); 60121528Sdavidn } 60223985Sdavidn if (!auth_hostok(lc, full_hostname, optarg)) 60323985Sdavidn refused("Permission denied", "HOST", 1); 60421528Sdavidn } 60521528Sdavidn 60623985Sdavidn if (!auth_ttyok(lc, tty)) 60723985Sdavidn refused("Permission denied", "TTY", 1); 60821528Sdavidn 60923985Sdavidn if (!auth_timeok(lc, time(NULL))) 61023985Sdavidn refused("Logins not available right now", "TIME", 1); 61121528Sdavidn } 61223985Sdavidn shell=login_getcapstr(lc, "shell", pwd->pw_shell, pwd->pw_shell); 61321528Sdavidn#else /* !LOGIN_CAP */ 61423985Sdavidn shell=pwd->pw_shell; 61521528Sdavidn#endif /* LOGIN_CAP */ 61623985Sdavidn if (*pwd->pw_shell == '\0') 61723985Sdavidn pwd->pw_shell = _PATH_BSHELL; 61823985Sdavidn if (*shell == '\0') /* Not overridden */ 61923985Sdavidn shell = pwd->pw_shell; 62023985Sdavidn if ((shell = strdup(shell)) == NULL) { 62123985Sdavidn syslog(LOG_NOTICE, "memory allocation error"); 62223985Sdavidn sleepexit(1); 62323985Sdavidn } 62421528Sdavidn 62521528Sdavidn#ifdef LOGIN_ACCESS 62623985Sdavidn if (login_access(pwd->pw_name, hostname ? full_hostname : tty) == 0) 62723985Sdavidn refused("Permission denied", "ACCESS", 1); 62821528Sdavidn#endif /* LOGIN_ACCESS */ 62921528Sdavidn 6301590Srgrimes /* Nothing else left to fail -- really log in. */ 6311590Srgrimes memset((void *)&utmp, 0, sizeof(utmp)); 6321590Srgrimes (void)time(&utmp.ut_time); 6331590Srgrimes (void)strncpy(utmp.ut_name, username, sizeof(utmp.ut_name)); 6341590Srgrimes if (hostname) 6351590Srgrimes (void)strncpy(utmp.ut_host, hostname, sizeof(utmp.ut_host)); 6361590Srgrimes (void)strncpy(utmp.ut_line, tty, sizeof(utmp.ut_line)); 6371590Srgrimes login(&utmp); 6381590Srgrimes 6391590Srgrimes dolastlog(quietlog); 6401590Srgrimes 6412224Sguido /* 6422224Sguido * Set device protections, depending on what terminal the 6432224Sguido * user is logged in. This feature is used on Suns to give 6442224Sguido * console users better privacy. 6452224Sguido */ 6462224Sguido login_fbtab(tty, pwd->pw_uid, pwd->pw_gid); 6472224Sguido 64823985Sdavidn (void)chown(ttyn, pwd->pw_uid, 64923985Sdavidn (gr = getgrnam(TTYGRPNAME)) ? gr->gr_gid : pwd->pw_gid); 6501590Srgrimes 65123985Sdavidn /* 65223985Sdavidn * Preserve TERM if it happens to be already set. 65323985Sdavidn */ 65423985Sdavidn term = getenv("TERM"); 6551590Srgrimes 65623985Sdavidn /* 65723985Sdavidn * Exclude cons/vt/ptys only, assume dialup otherwise 65823985Sdavidn * TODO: Make dialup tty determination a library call 65923985Sdavidn * for consistency (finger etc.) 66023985Sdavidn */ 66121528Sdavidn if (hostname==NULL && strchr("vpqstPQST", tty[sizeof("tty")-1]) == NULL) 6621590Srgrimes syslog(LOG_INFO, "DIALUP %s, %s", tty, pwd->pw_name); 6631590Srgrimes 6641590Srgrimes#ifdef KERBEROS 6655627Swollman if (!quietlog && notickets == 1 && !noticketsdontcomplain) 6661590Srgrimes (void)printf("Warning: no Kerberos tickets issued.\n"); 6671590Srgrimes#endif 6681590Srgrimes 6693205Spst#ifdef LOGALL 6703205Spst /* 6713205Spst * Syslog each successful login, so we don't have to watch hundreds 6723205Spst * of wtmp or lastlogin files. 6733205Spst */ 67423985Sdavidn if (hostname) 67523985Sdavidn syslog(LOG_INFO, "login from %s on %s as %s", 67623985Sdavidn full_hostname, tty, pwd->pw_name); 67723985Sdavidn else 67823985Sdavidn syslog(LOG_INFO, "login on %s as %s", 67923985Sdavidn tty, pwd->pw_name); 68021528Sdavidn#endif 68121528Sdavidn 68223985Sdavidn /* 68323985Sdavidn * If fflag is on, assume caller/authenticator has logged root login. 68423985Sdavidn */ 68523985Sdavidn if (rootlogin && fflag == 0) 68623985Sdavidn { 68723985Sdavidn if (hostname) 68823985Sdavidn syslog(LOG_NOTICE, "ROOT LOGIN (%s) ON %s FROM %s", 68923985Sdavidn username, tty, full_hostname); 69023985Sdavidn else 69123985Sdavidn syslog(LOG_NOTICE, "ROOT LOGIN (%s) ON %s", 69223985Sdavidn username, tty); 69323985Sdavidn } 69423985Sdavidn 69523985Sdavidn /* 69623985Sdavidn * Destroy environment unless user has requested its preservation. 69723985Sdavidn * We need to do this before setusercontext() because that may 69823985Sdavidn * set or reset some environment variables. 69923985Sdavidn */ 70021528Sdavidn if (!pflag) 70121528Sdavidn environ = envinit; 70221528Sdavidn 70323985Sdavidn /* 70423985Sdavidn * We don't need to be root anymore, so 70521528Sdavidn * set the user and session context 70621528Sdavidn */ 70721528Sdavidn#ifdef LOGIN_CAP 70821528Sdavidn if (setusercontext(lc, pwd, pwd->pw_uid, LOGIN_SETALL) != 0) { 70921528Sdavidn syslog(LOG_ERR, "setusercontext() failed - exiting"); 71021528Sdavidn exit(1); 7113205Spst } 71221528Sdavidn#else 71321528Sdavidn if (setlogin(pwd->pw_name) < 0) 71421528Sdavidn syslog(LOG_ERR, "setlogin() failure: %m"); 71521528Sdavidn 71621528Sdavidn (void)setgid(pwd->pw_gid); 71721528Sdavidn initgroups(username, pwd->pw_gid); 71821528Sdavidn (void)setuid(rootlogin ? 0 : pwd->pw_uid); 7193205Spst#endif 7203205Spst 72123148Sache (void)setenv("SHELL", pwd->pw_shell, 1); 72221528Sdavidn (void)setenv("HOME", pwd->pw_dir, 1); 72323985Sdavidn if (term != NULL && *term != '\0') 72421528Sdavidn (void)setenv("TERM", term, 1); /* Preset overrides */ 72521528Sdavidn else { 72623985Sdavidn (void)setenv("TERM", stypeof(tty), 0); /* Fallback doesn't */ 72721528Sdavidn } 72821528Sdavidn (void)setenv("LOGNAME", pwd->pw_name, 1); 72921528Sdavidn (void)setenv("USER", pwd->pw_name, 1); 73021528Sdavidn (void)setenv("PATH", rootlogin ? _PATH_STDPATH : _PATH_DEFPATH, 0); 73121528Sdavidn#ifdef KERBEROS 73221528Sdavidn if (krbtkfile_env) 73321528Sdavidn (void)setenv("KRBTKFILE", krbtkfile_env, 1); 73421528Sdavidn#endif 73523985Sdavidn#if LOGIN_CAP_AUTH 73623985Sdavidn auth_env(); 73721528Sdavidn#endif 73821528Sdavidn 73923985Sdavidn#ifdef LOGIN_CAP 7401590Srgrimes if (!quietlog) { 74123985Sdavidn char *cw; 74223985Sdavidn 74323985Sdavidn cw = login_getcapstr(lc, "copyright", NULL, NULL); 74421528Sdavidn if (cw != NULL && access(cw, F_OK) == 0) 74521528Sdavidn motd(cw); 74621528Sdavidn else 74723985Sdavidn (void)printf("%s\n\t%s %s\n", 74823985Sdavidn "Copyright (c) 1980, 1983, 1986, 1988, 1990, 1991, 1993, 1994", 74923985Sdavidn "The Regents of the University of California. ", 75023985Sdavidn "All rights reserved."); 75123985Sdavidn 75223985Sdavidn (void)printf("\n"); 75323985Sdavidn 75421528Sdavidn cw = login_getcapstr(lc, "welcome", NULL, NULL); 75521528Sdavidn if (cw == NULL || access(cw, F_OK) != 0) 75621528Sdavidn cw = _PATH_MOTDFILE; 75721528Sdavidn motd(cw); 75823985Sdavidn 75921528Sdavidn cw = getenv("MAIL"); /* $MAIL may have been set by class */ 76021528Sdavidn if (cw != NULL) { 76121528Sdavidn strncpy(tbuf, cw, sizeof(tbuf)); 76221528Sdavidn tbuf[sizeof(tbuf)-1] = '\0'; 76321528Sdavidn } else 76423985Sdavidn snprintf(tbuf, sizeof(tbuf), "%s/%s", 76523985Sdavidn _PATH_MAILDIR, pwd->pw_name); 76621528Sdavidn#else 76723985Sdavidn if (!quietlog) { 76823985Sdavidn (void)printf("%s\n\t%s %s\n", 76923985Sdavidn "Copyright (c) 1980, 1983, 1986, 1988, 1990, 1991, 1993, 1994", 77023985Sdavidn "The Regents of the University of California. ", 77123985Sdavidn "All rights reserved."); 77221528Sdavidn motd(_PATH_MOTDFILE); 77323985Sdavidn snprintf(tbuf, sizeof(tbuf), "%s/%s", 77423985Sdavidn _PATH_MAILDIR, pwd->pw_name); 77521528Sdavidn#endif 7761590Srgrimes if (stat(tbuf, &st) == 0 && st.st_size != 0) 77723985Sdavidn (void)printf("You have %smail.\n", 77823985Sdavidn (st.st_mtime > st.st_atime) ? "new " : ""); 7791590Srgrimes } 7801590Srgrimes 78121528Sdavidn#ifdef LOGIN_CAP 78221528Sdavidn login_close(lc); 7833205Spst#endif 7843205Spst 7851590Srgrimes (void)signal(SIGALRM, SIG_DFL); 7861590Srgrimes (void)signal(SIGQUIT, SIG_DFL); 7871590Srgrimes (void)signal(SIGINT, SIG_DFL); 7881590Srgrimes (void)signal(SIGTSTP, SIG_IGN); 7891590Srgrimes 7904878Sugen if (changepass) { 79121528Sdavidn if (system(_PATH_CHPASS) != 0) 7924878Sugen sleepexit(1); 7934878Sugen } 7944878Sugen 79523985Sdavidn /* 79623985Sdavidn * Login shells have a leading '-' in front of argv[0] 79723985Sdavidn */ 79823985Sdavidn tbuf[0] = '-'; 79923985Sdavidn (void)strcpy(tbuf + 1, (p = strrchr(pwd->pw_shell, '/')) ? p + 1 : pwd->pw_shell); 80023985Sdavidn 80121528Sdavidn execlp(shell, tbuf, 0); 80221528Sdavidn err(1, "%s", shell); 8031590Srgrimes} 8041590Srgrimes 8051590Srgrimes 80623985Sdavidn/* 80723985Sdavidn * Allow for authentication style and/or kerberos instance 80823985Sdavidn * */ 80921528Sdavidn 81021528Sdavidn#define NBUFSIZ UT_NAMESIZE + 64 81121528Sdavidn 8121590Srgrimesvoid 8131590Srgrimesgetloginname() 8141590Srgrimes{ 8151590Srgrimes int ch; 8161590Srgrimes char *p; 8171590Srgrimes static char nbuf[NBUFSIZ]; 8181590Srgrimes 8191590Srgrimes for (;;) { 8201590Srgrimes (void)printf("login: "); 8211590Srgrimes for (p = nbuf; (ch = getchar()) != '\n'; ) { 8221590Srgrimes if (ch == EOF) { 8231590Srgrimes badlogin(username); 8241590Srgrimes exit(0); 8251590Srgrimes } 8261590Srgrimes if (p < nbuf + (NBUFSIZ - 1)) 8271590Srgrimes *p++ = ch; 8281590Srgrimes } 8291590Srgrimes if (p > nbuf) 8301590Srgrimes if (nbuf[0] == '-') 8311590Srgrimes (void)fprintf(stderr, 8321590Srgrimes "login names may not start with '-'.\n"); 8331590Srgrimes else { 8341590Srgrimes *p = '\0'; 8351590Srgrimes username = nbuf; 8361590Srgrimes break; 8371590Srgrimes } 8381590Srgrimes } 8391590Srgrimes} 8401590Srgrimes 8411590Srgrimesint 8421590Srgrimesrootterm(ttyn) 8431590Srgrimes char *ttyn; 8441590Srgrimes{ 8451590Srgrimes struct ttyent *t; 84623985Sdavidn 8471590Srgrimes return ((t = getttynam(ttyn)) && t->ty_status & TTY_SECURE); 8481590Srgrimes} 8491590Srgrimes 85021528Sdavidnvolatile int motdinterrupt; 8511590Srgrimes 85221528Sdavidn/* ARGSUSED */ 8531590Srgrimesvoid 85421528Sdavidnsigint(signo) 85521528Sdavidn int signo; 8561590Srgrimes{ 85721528Sdavidn motdinterrupt = 1; 85821528Sdavidn} 85921528Sdavidn 86021528Sdavidnvoid 86121528Sdavidnmotd(motdfile) 86221528Sdavidn char *motdfile; 86321528Sdavidn{ 8641590Srgrimes int fd, nchars; 8651590Srgrimes sig_t oldint; 86621528Sdavidn char tbuf[256]; 8671590Srgrimes 86821528Sdavidn if ((fd = open(motdfile, O_RDONLY, 0)) < 0) 8691590Srgrimes return; 87021528Sdavidn motdinterrupt = 0; 8711590Srgrimes oldint = signal(SIGINT, sigint); 87221528Sdavidn while ((nchars = read(fd, tbuf, sizeof(tbuf))) > 0 && !motdinterrupt) 87321528Sdavidn (void)write(fileno(stdout), tbuf, nchars); 8741590Srgrimes (void)signal(SIGINT, oldint); 8751590Srgrimes (void)close(fd); 8761590Srgrimes} 8771590Srgrimes 8781590Srgrimes/* ARGSUSED */ 8791590Srgrimesvoid 8801590Srgrimestimedout(signo) 8811590Srgrimes int signo; 8821590Srgrimes{ 8831590Srgrimes (void)fprintf(stderr, "Login timed out after %d seconds\n", timeout); 8841590Srgrimes exit(0); 8851590Srgrimes} 8861590Srgrimes 88721528Sdavidn#ifndef LOGIN_CAP 8881590Srgrimesvoid 8891590Srgrimeschecknologin() 8901590Srgrimes{ 8911590Srgrimes int fd, nchars; 8921590Srgrimes char tbuf[8192]; 8931590Srgrimes 8941590Srgrimes if ((fd = open(_PATH_NOLOGIN, O_RDONLY, 0)) >= 0) { 8951590Srgrimes while ((nchars = read(fd, tbuf, sizeof(tbuf))) > 0) 8961590Srgrimes (void)write(fileno(stdout), tbuf, nchars); 8971590Srgrimes sleepexit(0); 8981590Srgrimes } 8991590Srgrimes} 90021528Sdavidn#endif 9011590Srgrimes 9021590Srgrimesvoid 9031590Srgrimesdolastlog(quiet) 9041590Srgrimes int quiet; 9051590Srgrimes{ 9061590Srgrimes struct lastlog ll; 9071590Srgrimes int fd; 9081590Srgrimes 9091590Srgrimes if ((fd = open(_PATH_LASTLOG, O_RDWR, 0)) >= 0) { 9101590Srgrimes (void)lseek(fd, (off_t)pwd->pw_uid * sizeof(ll), L_SET); 9111590Srgrimes if (!quiet) { 9121590Srgrimes if (read(fd, (char *)&ll, sizeof(ll)) == sizeof(ll) && 9131590Srgrimes ll.ll_time != 0) { 9141590Srgrimes (void)printf("Last login: %.*s ", 9151590Srgrimes 24-5, (char *)ctime(&ll.ll_time)); 9161590Srgrimes if (*ll.ll_host != '\0') 9171590Srgrimes (void)printf("from %.*s\n", 9181590Srgrimes (int)sizeof(ll.ll_host), 9191590Srgrimes ll.ll_host); 9201590Srgrimes else 9211590Srgrimes (void)printf("on %.*s\n", 9221590Srgrimes (int)sizeof(ll.ll_line), 9231590Srgrimes ll.ll_line); 9241590Srgrimes } 9251590Srgrimes (void)lseek(fd, (off_t)pwd->pw_uid * sizeof(ll), L_SET); 9261590Srgrimes } 9271590Srgrimes memset((void *)&ll, 0, sizeof(ll)); 9281590Srgrimes (void)time(&ll.ll_time); 9291590Srgrimes (void)strncpy(ll.ll_line, tty, sizeof(ll.ll_line)); 9301590Srgrimes if (hostname) 9311590Srgrimes (void)strncpy(ll.ll_host, hostname, sizeof(ll.ll_host)); 9321590Srgrimes (void)write(fd, (char *)&ll, sizeof(ll)); 9331590Srgrimes (void)close(fd); 9341590Srgrimes } 9351590Srgrimes} 9361590Srgrimes 9371590Srgrimesvoid 9381590Srgrimesbadlogin(name) 9391590Srgrimes char *name; 9401590Srgrimes{ 9411590Srgrimes 9421590Srgrimes if (failures == 0) 9431590Srgrimes return; 9441590Srgrimes if (hostname) { 9451590Srgrimes syslog(LOG_NOTICE, "%d LOGIN FAILURE%s FROM %s", 94616423Sache failures, failures > 1 ? "S" : "", full_hostname); 9471590Srgrimes syslog(LOG_AUTHPRIV|LOG_NOTICE, 9481590Srgrimes "%d LOGIN FAILURE%s FROM %s, %s", 94916423Sache failures, failures > 1 ? "S" : "", full_hostname, name); 9501590Srgrimes } else { 9511590Srgrimes syslog(LOG_NOTICE, "%d LOGIN FAILURE%s ON %s", 9521590Srgrimes failures, failures > 1 ? "S" : "", tty); 9531590Srgrimes syslog(LOG_AUTHPRIV|LOG_NOTICE, 9541590Srgrimes "%d LOGIN FAILURE%s ON %s, %s", 9551590Srgrimes failures, failures > 1 ? "S" : "", tty, name); 9561590Srgrimes } 9571590Srgrimes} 9581590Srgrimes 9591590Srgrimes#undef UNKNOWN 9601590Srgrimes#define UNKNOWN "su" 9611590Srgrimes 9621590Srgrimeschar * 9631590Srgrimesstypeof(ttyid) 9641590Srgrimes char *ttyid; 9651590Srgrimes{ 96623985Sdavidn 9671590Srgrimes struct ttyent *t; 96823985Sdavidn 9691590Srgrimes return (ttyid && (t = getttynam(ttyid)) ? t->ty_type : UNKNOWN); 9701590Srgrimes} 9711590Srgrimes 9721590Srgrimesvoid 97323985Sdavidnrefused(msg, rtype, lout) 97423985Sdavidn char *msg; 97523985Sdavidn char *rtype; 97623985Sdavidn int lout; 97723985Sdavidn{ 97823985Sdavidn 97923985Sdavidn if (msg != NULL) 98023985Sdavidn printf("%s.\n", msg); 98123985Sdavidn if (hostname) 98223985Sdavidn syslog(LOG_NOTICE, "LOGIN %s REFUSED (%s) FROM %s ON TTY %s", 98323985Sdavidn pwd->pw_name, rtype, full_hostname, tty); 98423985Sdavidn else 98523985Sdavidn syslog(LOG_NOTICE, "LOGIN %s REFUSED (%s) ON TTY %s", 98623985Sdavidn pwd->pw_name, rtype, tty); 98723985Sdavidn if (lout) 98823985Sdavidn sleepexit(1); 98923985Sdavidn} 99023985Sdavidn 99123985Sdavidnvoid 9921590Srgrimessleepexit(eval) 9931590Srgrimes int eval; 9941590Srgrimes{ 99523985Sdavidn 9961590Srgrimes (void)sleep(5); 9971590Srgrimes exit(eval); 9981590Srgrimes} 999