#ifndef lint
char copyright[] =
- "@(#) Copyright (c) 1980, 1987, 1988 The Regents of the University of California.\n\
+"@(#) Copyright (c) 1980, 1987, 1988 The Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */
static char sccsid[] = "@(#)login.c 5.25 (Berkeley) 1/6/89";
#endif /* not lint */
-#define KERBEROS
-
- /*
- * login -f name (for pre-authenticated login)
- * login name (for non-authenticated/non-authorized login)
- */
-
+/*
+ * login [ name ]
+ * login -r hostname (for rlogind)
+ * login -h hostname (for telnetd, etc.)
+ * login -f name (for pre-authenticated login: datakit, xterm, etc.)
+ */
+
#define VFS
#define BYPASS_ROOT_CHK
-
+
#include <sys/param.h>
#ifndef VFS
#include <sys/quota.h>
#include <sys/resource.h>
#include <sys/file.h>
#include <sys/ioctl.h>
-
+
#include <utmp.h>
#include <signal.h>
#include <lastlog.h>
#include <setjmp.h>
#include <stdio.h>
#include <strings.h>
-
+
+#include <netdb.h>
+#include <string.h>
+
#ifdef UIDGID_T
- uid_t getuid();
+uid_t getuid();
#define uid_type uid_t
#define gid_type gid_t
#else
- int getuid();
+int getuid();
#define uid_type int
#define gid_type int
#endif /* UIDGID_T */
-
+
#define TTYGRPNAME "tty" /* name of group to own ttys */
-
+
#define MOTDFILE "/etc/motd"
#define MAILDIR "/usr/spool/mail"
#define NOLOGIN "/etc/nologin"
#define HUSHLOGIN ".hushlogin"
#define LASTLOG "/usr/adm/lastlog"
#define BSHELL "/bin/sh"
-
+
#ifdef VFS
#define QUOTAWARN "/usr/ucb/quota" /* warn user about quotas */
#endif VFS
-
+
#define UT_HOSTSIZE sizeof(((struct utmp *)0)->ut_host)
#define UT_NAMESIZE sizeof(((struct utmp *)0)->ut_name)
-
+
/*
* This bounds the time given to login. Not a define so it can
* be patched on machines where it's too small.
*/
-int timeout = 300;
+int timeout = 300;
struct passwd *pwd;
-char term[64], *hostname, *username = NULL;
+char term[64], *hostname, *username;
struct sgttyb sgttyb;
struct tchars tc = {
- CINTR, CQUIT, CSTART, CSTOP, CEOT, CBRK
- };
+ CINTR, CQUIT, CSTART, CSTOP, CEOT, CBRK
+};
struct ltchars ltc = {
- CSUSP, CDSUSP, CRPRNT, CFLUSH, CWERASE, CLNEXT
- };
+ CSUSP, CDSUSP, CRPRNT, CFLUSH, CWERASE, CLNEXT
+};
extern int errno;
-char *getenv();
-int putenv();
-void setenv();
-void dofork();
-
#ifdef POSIX
typedef void sigtype;
#else
typedef int sigtype;
#endif /* POSIX */
-#ifdef CRAY
-char user[32] = "LOGNAME=";
-#include <tmpdir.h>
-char tmpdir[64] = "TMPDIR=";
-#else
-char user[20] = "USER=";
-#endif
-
-char homedir[64] = "HOME=";
-char shell[64] = "SHELL=";
-
-
-#ifdef KERBEROS
-char *envinit[] =
-#ifdef CRAY
- {homedir, shell, PATH, user, "TZ=GMT0", tmpdir, 0};
-#define TZENV 4
-#define TMPDIRENV 5
-char *getenv();
-extern
-#else
- {homedir, shell, "PATH=:/usr/ucb:/bin:/usr/bin:/usr/bin/kerberos",
- user, 0};
-#endif /* CRAY */
-#else /* !KERBEROS */
-char *envinit[] =
-#ifdef CRAY
- {homedir, shell, PATH, user, "TZ=GMT0", tmpdir, 0};
-#define TZENV 4
-#define TMPDIRENV 5
-char *getenv();
-extern
-#else
- {homedir, shell, "PATH=:/usr/ucb:/bin:/usr/bin:/usr/bin/kerberos",
- user, 0};
-#endif /* CRAY */
-#endif /* KERBEROS */
-char **environ;
-
+#define EXCL_TEST if (rflag || hflag) { \
+ fprintf(stderr, \
+ "login: only one of -r and -h allowed.\n"); \
+ exit(1);\
+ }
main(argc, argv)
- int argc;
- char **argv;
+ int argc;
+ char **argv;
{
- extern int optind;
- extern char *optarg;
- struct group *gr;
- register int ch;
- register char *p;
- int fflag, pflag, cnt;
- int quietlog, ioctlval;
- sigtype timedout();
- char *domain, *salt, *ttyn, *tty;
- char tbuf[MAXPATHLEN + 2];
- char *ttyname(), *stypeof(), *crypt(), *getpass();
- time_t time();
- off_t lseek();
- int passwd_req = 1, preserve_env = 0;
-
- (void)signal(SIGALRM, timedout);
- (void)alarm((u_int)timeout);
- (void)signal(SIGQUIT, SIG_IGN);
- (void)signal(SIGINT, SIG_IGN);
- (void)setpriority(PRIO_PROCESS, 0, 0);
+ extern int optind;
+ extern char *optarg, **environ;
+ struct group *gr;
+ register int ch;
+ register char *p;
+ int fflag, hflag, pflag, rflag, cnt;
+ int quietlog, passwd_req, ioctlval;
+ sigtype timedout();
+ char *domain, *salt, *envinit[1], *ttyn, *tty;
+ char tbuf[MAXPATHLEN + 2];
+ char *ttyname(), *stypeof(), *crypt(), *getpass();
+ time_t time();
+ off_t lseek();
+ struct hostent *hp;
+
+ (void)signal(SIGALRM, timedout);
+ (void)alarm((u_int)timeout);
+ (void)signal(SIGQUIT, SIG_IGN);
+ (void)signal(SIGINT, SIG_IGN);
+ (void)setpriority(PRIO_PROCESS, 0, 0);
#ifndef VFS
- (void)quota(Q_SETUID, 0, 0, 0);
+ (void)quota(Q_SETUID, 0, 0, 0);
#endif VFS
-
- (void)gethostname(tbuf, sizeof(tbuf));
- domain = index(tbuf, '.');
-
- passwd_req = 1;
- while ((ch = getopt(argc, argv, "fp")) != EOF)
- switch (ch) {
- case 'f':
- passwd_req = 0;
- break;
- case 'p':
- preserve_env = 1;
- break;
- case '?':
- default:
- fprintf(stderr, "usage: login [-fp] [username]\n");
- exit(1);
- break;
- }
- argc -= optind;
- argv += optind;
- if (*argv)
- hostname = *argv;
-
- ioctlval = 0;
- (void)ioctl(0, TIOCLSET, (char *)&ioctlval);
- (void)ioctl(0, TIOCNXCL, (char *)0);
- (void)fcntl(0, F_SETFL, ioctlval);
- (void)ioctl(0, TIOCGETP, (char *)&sgttyb);
-
- doremotelogin();
-
- /*
- * If talking to an rlogin process, propagate the terminal type and
- * baud rate across the network.
- */
- doremoteterm(&sgttyb);
- sgttyb.sg_erase = CERASE;
- sgttyb.sg_kill = CKILL;
- (void)ioctl(0, TIOCSLTC, (char *)<c);
- (void)ioctl(0, TIOCSETC, (char *)&tc);
- (void)ioctl(0, TIOCSETP, (char *)&sgttyb);
-
- for (cnt = getdtablesize(); cnt > 2; cnt--)
- (void) close(cnt);
-
- ttyn = ttyname(0);
- if (ttyn == NULL || *ttyn == '\0')
- ttyn = "/dev/tty??";
- if (tty = rindex(ttyn, '/'))
- ++tty;
- else
- tty = ttyn;
-
-#ifndef LOG_ODELAY /* 4.2 syslog ... */
- openlog("login", 0);
-#else
- openlog("login", LOG_ODELAY, LOG_AUTH);
-#endif /* 4.2 syslog */
-
- for (cnt = 0;; username = NULL) {
+
+ /*
+ * -p is used by getty to tell login not to destroy the environment
+ * -r is used by rlogind to cause the autologin protocol;
+ * -f is used to skip a second login authentication
+ * -h is used by other servers to pass the name of the
+ * remote host to login so that it may be placed in utmp and wtmp
+ */
+ (void)gethostname(tbuf, sizeof(tbuf));
+ domain = index(tbuf, '.');
+
+ fflag = hflag = pflag = rflag = 0;
+ passwd_req = 1;
+ while ((ch = getopt(argc, argv, "fh:pr:")) != EOF)
+ switch (ch) {
+ case 'f':
+ fflag = 1;
+ break;
+ case 'h':
+ EXCL_TEST;
+ if (getuid()) {
+ fprintf(stderr,
+ "login: -h for super-user only.\n");
+ exit(1);
+ }
+ hflag = 1;
+ if (domain && (p = index(optarg, '.')) &&
+ strcmp(p, domain) == 0)
+ *p = 0;
+ hostname = optarg;
+ break;
+ case 'p':
+ pflag = 1;
+ break;
+ case 'r':
+ EXCL_TEST;
+ if (getuid()) {
+ fprintf(stderr,
+ "login: -r for super-user only.\n");
+ exit(1);
+ }
+ /* "-r hostname" must be last args */
+ if (optind != argc) {
+ fprintf(stderr, "Syntax error.\n");
+ exit(1);
+ }
+ rflag = 1;
+ passwd_req = (doremotelogin(optarg) == -1);
+ if (domain && (p = index(optarg, '.')) &&
+ !strcmp(p, domain))
+ *p = '\0';
+ hostname = optarg;
+ break;
+ case '?':
+ default:
+ fprintf(stderr, "usage: login [-fp] [-h hostname] [-r hostname] [username] \n");
+ exit(1);
+ }
+ argc -= optind;
+ argv += optind;
+ if (*argv)
+ username = *argv;
+
+ if (!(hp = gethostbyname(hostname))) {
+ fprintf(stderr, "Unknown host: %s\n", hostname);
+ exit(1);
+ }
+ hostname = malloc(strlen(hp->h_name)+1);
+ if (!hostname) {
+ fprintf(stderr, "Couldn't malloc space for hostname.\n");
+ exit(1);
+ }
+ strcpy(hostname, hp->h_name);
+
ioctlval = 0;
- (void)ioctl(0, TIOCSETD, (char *)&ioctlval);
-
- if (username == NULL)
- getloginname();
-
- if (pwd = getpwnam(username))
- salt = pwd->pw_passwd;
- else
- salt = "xx";
-
- /* if user not super-user, check for disabled logins */
- if (pwd == NULL || pwd->pw_uid)
- checknologin();
-
+ (void)ioctl(0, TIOCLSET, (char *)&ioctlval);
+ (void)ioctl(0, TIOCNXCL, (char *)0);
+ (void)fcntl(0, F_SETFL, ioctlval);
+ (void)ioctl(0, TIOCGETP, (char *)&sgttyb);
+
/*
- * Disallow automatic login to root; if not invoked by
- * root, disallow if the uid's differ.
+ * If talking to an rlogin process, propagate the terminal type and
+ * baud rate across the network.
*/
- if (!passwd_req && pwd) {
- int uid = (int) getuid();
-
- passwd_req = (uid && uid != pwd->pw_uid)
+ if (rflag)
+ doremoteterm(&sgttyb);
+ sgttyb.sg_erase = CERASE;
+ sgttyb.sg_kill = CKILL;
+ (void)ioctl(0, TIOCSLTC, (char *)<c);
+ (void)ioctl(0, TIOCSETC, (char *)&tc);
+ (void)ioctl(0, TIOCSETP, (char *)&sgttyb);
+
+ for (cnt = getdtablesize(); cnt > 2; cnt--)
+ (void) close(cnt);
+
+ ttyn = ttyname(0);
+ if (ttyn == NULL || *ttyn == '\0')
+ ttyn = "/dev/tty??";
+ if (tty = rindex(ttyn, '/'))
+ ++tty;
+ else
+ tty = ttyn;
+
+#ifndef LOG_ODELAY /* 4.2 syslog ... */
+ openlog("login", 0);
+#else
+ openlog("login", LOG_ODELAY, LOG_AUTH);
+#endif /* 4.2 syslog */
+
+ for (cnt = 0;; username = NULL) {
+ ioctlval = 0;
+ (void)ioctl(0, TIOCSETD, (char *)&ioctlval);
+
+ if (username == NULL) {
+ fflag = 0;
+ getloginname();
+ }
+ if (pwd = getpwnam(username))
+ salt = pwd->pw_passwd;
+ else
+ salt = "xx";
+
+ /* if user not super-user, check for disabled logins */
+ if (pwd == NULL || pwd->pw_uid)
+ checknologin();
+
+ /*
+ * Disallow automatic login to root; if not invoked by
+ * root, disallow if the uid's differ.
+ */
+ if (fflag && pwd) {
+ int uid = (int) getuid();
+
+ passwd_req = (uid && uid != pwd->pw_uid)
#ifndef BYPASS_ROOT_CHK
- || (pwd->pw_uid == 0);
+ || (pwd->pw_uid == 0);
#else
- ;
+ ;
#endif
+ }
+
+ /*
+ * If no remote login authentication and a password exists
+ * for this user, prompt for one and verify it.
+ */
+ if (!passwd_req || pwd && !*pwd->pw_passwd)
+ break;
+
+ (void) setpriority(PRIO_PROCESS, 0, -4);
+ p = crypt(getpass("Password:"), salt);
+ (void) setpriority(PRIO_PROCESS, 0, 0);
+ if (pwd && !strcmp(p, pwd->pw_passwd))
+ break;
+
+ printf("Login incorrect\n");
+ if (++cnt >= 5) {
+ if (hostname)
+ syslog(LOG_ERR,
+ "REPEATED LOGIN FAILURES ON %s FROM %.*s, %.*s",
+ tty, UT_HOSTSIZE, hostname, UT_NAMESIZE,
+ username);
+ else
+ syslog(LOG_ERR,
+ "REPEATED LOGIN FAILURES ON %s, %.*s",
+ tty, UT_NAMESIZE, username);
+ (void)ioctl(0, TIOCHPCL, (char *)0);
+ sleepexit(1);
+ }
}
-
+
+ /* committed to login -- turn off timeout */
+ (void)alarm((u_int)0);
+
/*
- * If no remote login authentication and a password exists
- * for this user, prompt for one and verify it.
+ * If valid so far and root is logging in, see if root logins on
+ * this terminal are permitted.
*/
- if (!passwd_req || pwd && !*pwd->pw_passwd)
- break;
-
- (void) setpriority(PRIO_PROCESS, 0, -4);
- p = crypt(getpass("Password:"), salt);
- (void) setpriority(PRIO_PROCESS, 0, 0);
- if (pwd && !strcmp(p, pwd->pw_passwd))
- break;
-
- printf("Login incorrect\n");
- if (++cnt >= 5) {
- if (hostname)
- syslog(LOG_ERR,
- "REPEATED LOGIN FAILURES ON %s FROM %.*s, %.*s",
- tty, UT_HOSTSIZE, hostname, UT_NAMESIZE,
- username);
- else
- syslog(LOG_ERR,
- "REPEATED LOGIN FAILURES ON %s, %.*s",
- tty, UT_NAMESIZE, username);
- (void)ioctl(0, TIOCHPCL, (char *)0);
- sleepexit(1);
- }
- }
-
- /* committed to login -- turn off timeout */
- (void)alarm((u_int)0);
-
- /*
- * If valid so far and root is logging in, see if root logins on
- * this terminal are permitted.
- */
#ifndef BYPASS_ROOT_CHK
- if (pwd->pw_uid == 0 && !rootterm(tty)) {
- if (hostname)
- syslog(LOG_ERR, "ROOT LOGIN REFUSED ON %s FROM %.*s",
- tty, UT_HOSTSIZE, hostname);
- else
- syslog(LOG_ERR, "ROOT LOGIN REFUSED ON %s", tty);
- printf("Login incorrect\n");
- sleepexit(1);
- }
+ if (pwd->pw_uid == 0 && !rootterm(tty)) {
+ if (hostname)
+ syslog(LOG_ERR, "ROOT LOGIN REFUSED ON %s FROM %.*s",
+ tty, UT_HOSTSIZE, hostname);
+ else
+ syslog(LOG_ERR, "ROOT LOGIN REFUSED ON %s", tty);
+ printf("Login incorrect\n");
+ sleepexit(1);
+ }
#endif
-
+
#ifndef VFS
- if (quota(Q_SETUID, pwd->pw_uid, 0, 0) < 0 && errno != EINVAL) {
- switch(errno) {
- case EUSERS:
- fprintf(stderr,
- "Too many users logged on already.\nTry again later.\n");
- break;
- case EPROCLIM:
- fprintf(stderr,
- "You have too many processes running.\n");
- break;
- default:
- perror("quota (Q_SETUID)");
+ if (quota(Q_SETUID, pwd->pw_uid, 0, 0) < 0 && errno != EINVAL) {
+ switch(errno) {
+ case EUSERS:
+ fprintf(stderr,
+ "Too many users logged on already.\nTry again later.\n");
+ break;
+ case EPROCLIM:
+ fprintf(stderr,
+ "You have too many processes running.\n");
+ break;
+ default:
+ perror("quota (Q_SETUID)");
+ }
+ sleepexit(0);
}
- sleepexit(0);
- }
#endif /* !VFS */
-
- if (chdir(pwd->pw_dir) < 0) {
- printf("No directory %s!\n", pwd->pw_dir);
- if (chdir("/"))
- exit(0);
- pwd->pw_dir = "/";
- printf("Logging in with home = \"/\".\n");
- }
-
- /* nothing else left to fail -- really log in */
- {
- struct utmp utmp;
-
- (void)time(&utmp.ut_time);
- (void) strncpy(utmp.ut_name, username, sizeof(utmp.ut_name));
- if (hostname)
- (void) strncpy(utmp.ut_host, hostname,
- sizeof(utmp.ut_host));
- else
- bzero(utmp.ut_host, sizeof(utmp.ut_host));
- (void) strncpy(utmp.ut_line, tty, sizeof(utmp.ut_line));
- login(&utmp);
- }
-
- quietlog = access(HUSHLOGIN, F_OK) == 0;
- dolastlog(quietlog, tty);
-
- {
- static struct winsize win = { 0, 0, 0, 0 };
+
+ if (chdir(pwd->pw_dir) < 0) {
+ printf("No directory %s!\n", pwd->pw_dir);
+ if (chdir("/"))
+ exit(0);
+ pwd->pw_dir = "/";
+ printf("Logging in with home = \"/\".\n");
+ }
+
+ /* nothing else left to fail -- really log in */
+ {
+ struct utmp utmp;
+
+ (void)time(&utmp.ut_time);
+ (void) strncpy(utmp.ut_name, username, sizeof(utmp.ut_name));
+ if (hostname)
+ (void) strncpy(utmp.ut_host, hostname,
+ sizeof(utmp.ut_host));
+ else
+ bzero(utmp.ut_host, sizeof(utmp.ut_host));
+ (void) strncpy(utmp.ut_line, tty, sizeof(utmp.ut_line));
+ login(&utmp);
+ }
+
+ quietlog = access(HUSHLOGIN, F_OK) == 0;
+ dolastlog(quietlog, tty);
+
+ if (!hflag && !rflag) { /* XXX */
+ static struct winsize win = { 0, 0, 0, 0 };
+
+ (void)ioctl(0, TIOCSWINSZ, (char *)&win);
+ }
+
+ (void)chown(ttyn, pwd->pw_uid,
+ (gr = getgrnam(TTYGRPNAME)) ? gr->gr_gid : pwd->pw_gid);
+ (void)chmod(ttyn, 0620);
- (void)ioctl(0, TIOCSWINSZ, (char *)&win);
- }
-
- (void)chown(ttyn, pwd->pw_uid,
- (gr = getgrnam(TTYGRPNAME)) ? gr->gr_gid : pwd->pw_gid);
-
- (void)chmod(ttyn, 0620);
-
- (void)setgid((gid_type) pwd->pw_gid);
-
- (void) initgroups(username, pwd->pw_gid);
-
+ (void)setgid((gid_type) pwd->pw_gid);
+
+ (void) initgroups(username, pwd->pw_gid);
+
#ifndef VFS
- quota(Q_DOWARN, pwd->pw_uid, (dev_t)-1, 0);
+ quota(Q_DOWARN, pwd->pw_uid, (dev_t)-1, 0);
#endif
- (void)setuid((uid_type) pwd->pw_uid);
-
- if (*pwd->pw_shell == '\0')
- pwd->pw_shell = BSHELL;
- /* turn on new line discipline for the csh */
- else if (!strcmp(pwd->pw_shell, "/bin/csh")) {
- ioctlval = NTTYDISC;
- (void)ioctl(0, TIOCSETD, (char *)&ioctlval);
- }
- /* Destroy old environment unless requested. */
- if (!preserve_env)
- environ = envinit;
-
- setenv("HOME", pwd->pw_dir);
- setenv("SHELL", pwd->pw_shell);
- if (term[0] == '\0')
- (void) strncpy(term, stypeof(tty), sizeof(term));
- setenv("TERM", term);
- setenv("USER", pwd->pw_name);
- setenv("PATH", "/usr/ucb:/bin:/usr/bin:");
-
- if (tty[sizeof("tty")-1] == 'd')
- syslog(LOG_INFO, "DIALUP %s, %s", tty, pwd->pw_name);
-
- if (!quietlog) {
- struct stat st;
- motd();
- (void)sprintf(tbuf, "%s/%s", MAILDIR, pwd->pw_name);
- if (stat(tbuf, &st) == 0 && st.st_size != 0)
- printf("You have %smail.\n",
- (st.st_mtime > st.st_atime) ? "new " : "");
- }
-
+ (void)setuid((uid_type) pwd->pw_uid);
+
+ if (*pwd->pw_shell == '\0')
+ pwd->pw_shell = BSHELL;
+ /* turn on new line discipline for the csh */
+ else if (!strcmp(pwd->pw_shell, "/bin/csh")) {
+ ioctlval = NTTYDISC;
+ (void)ioctl(0, TIOCSETD, (char *)&ioctlval);
+ }
+
+ /* destroy environment unless user has requested preservation */
+ if (!pflag)
+ environ = envinit;
+ (void)setenv("HOME", pwd->pw_dir, 1);
+ (void)setenv("SHELL", pwd->pw_shell, 1);
+ if (term[0] == '\0')
+ (void) strncpy(term, stypeof(tty), sizeof(term));
+ (void)setenv("TERM", term, 0);
+ (void)setenv("USER", pwd->pw_name, 1);
+ (void)setenv("PATH", ":/usr/ucb:/bin:/usr/bin", 0);
+
+ if (tty[sizeof("tty")-1] == 'd')
+ syslog(LOG_INFO, "DIALUP %s, %s", tty, pwd->pw_name);
+ if (pwd->pw_uid == 0)
+ if (hostname)
+ syslog(LOG_NOTICE, "ROOT LOGIN %s FROM %.*s",
+ tty, UT_HOSTSIZE, hostname);
+ else
+ syslog(LOG_NOTICE, "ROOT LOGIN %s", tty);
+
+ if (!quietlog) {
+ struct stat st;
+
+ motd();
+ (void)sprintf(tbuf, "%s/%s", MAILDIR, pwd->pw_name);
+ if (stat(tbuf, &st) == 0 && st.st_size != 0)
+ printf("You have %smail.\n",
+ (st.st_mtime > st.st_atime) ? "new " : "");
+ }
+
#ifdef VFS
- if (! access( QUOTAWARN, X_OK)) (void) system(QUOTAWARN);
+ if (! access( QUOTAWARN, X_OK)) (void) system(QUOTAWARN);
#endif VFS
- (void)signal(SIGALRM, SIG_DFL);
- (void)signal(SIGQUIT, SIG_DFL);
- (void)signal(SIGINT, SIG_DFL);
- (void)signal(SIGTSTP, SIG_IGN);
-
- tbuf[0] = '-';
- (void) strcpy(tbuf + 1, (p = rindex(pwd->pw_shell, '/')) ?
- p + 1 : pwd->pw_shell);
- execlp(pwd->pw_shell, tbuf, 0);
- fprintf(stderr, "login: no shell: ");
- perror(pwd->pw_shell);
- exit(0);
+ (void)signal(SIGALRM, SIG_DFL);
+ (void)signal(SIGQUIT, SIG_DFL);
+ (void)signal(SIGINT, SIG_DFL);
+ (void)signal(SIGTSTP, SIG_IGN);
+
+ tbuf[0] = '-';
+ (void) strcpy(tbuf + 1, (p = rindex(pwd->pw_shell, '/')) ?
+ p + 1 : pwd->pw_shell);
+ execlp(pwd->pw_shell, tbuf, 0);
+ fprintf(stderr, "login: no shell: ");
+ perror(pwd->pw_shell);
+ exit(0);
}
-
-
getloginname()
{
- register int ch;
- register char *p;
- static char nbuf[UT_NAMESIZE + 1];
-
- for (;;) {
- printf("login: ");
- for (p = nbuf; (ch = getchar()) != '\n'; ) {
- if (ch == EOF)
- exit(0);
- if (p < nbuf + UT_NAMESIZE)
- *p++ = ch;
+ register int ch;
+ register char *p;
+ static char nbuf[UT_NAMESIZE + 1];
+
+ for (;;) {
+ printf("login: ");
+ for (p = nbuf; (ch = getchar()) != '\n'; ) {
+ if (ch == EOF)
+ exit(0);
+ if (p < nbuf + UT_NAMESIZE)
+ *p++ = ch;
+ }
+ if (p > nbuf)
+ if (nbuf[0] == '-')
+ fprintf(stderr,
+ "login names may not start with '-'.\n");
+ else {
+ *p = '\0';
+ username = nbuf;
+ break;
+ }
}
- if (p > nbuf)
- if (nbuf[0] == '-')
- fprintf(stderr,
- "login names may not start with '-'.\n");
- else {
- *p = '\0';
- username = nbuf;
- break;
- }
- }
}
-
-
sigtype
- timedout()
+timedout()
{
- fprintf(stderr, "Login timed out after %d seconds\n", timeout);
- exit(0);
+ fprintf(stderr, "Login timed out after %d seconds\n", timeout);
+ exit(0);
}
-
-
#ifdef NOTTYENT
int root_tty_security = 0;
#endif
rootterm(tty)
- char *tty;
+ char *tty;
{
#ifdef NOTTYENT
- return(root_tty_security);
+ return(root_tty_security);
#else
- struct ttyent *t;
-
- return((t = getttynam(tty)) && t->ty_status&TTY_SECURE);
+ struct ttyent *t;
+
+ return((t = getttynam(tty)) && t->ty_status&TTY_SECURE);
#endif NOTTYENT
}
-
-
jmp_buf motdinterrupt;
motd()
{
- register int fd, nchars;
- sigtype (*oldint)(), sigint();
- char tbuf[8192];
-
- if ((fd = open(MOTDFILE, O_RDONLY, 0)) < 0)
- return;
- oldint = (sigtype (*)()) signal(SIGINT, sigint);
- if (setjmp(motdinterrupt) == 0)
- while ((nchars = read(fd, tbuf, sizeof(tbuf))) > 0)
- (void)write(fileno(stdout), tbuf, nchars);
- (void)signal(SIGINT, oldint);
- (void)close(fd);
+ register int fd, nchars;
+ sigtype (*oldint)(), sigint();
+ char tbuf[8192];
+
+ if ((fd = open(MOTDFILE, O_RDONLY, 0)) < 0)
+ return;
+ oldint = (sigtype (*)())signal(SIGINT, sigint);
+ if (setjmp(motdinterrupt) == 0)
+ while ((nchars = read(fd, tbuf, sizeof(tbuf))) > 0)
+ (void)write(fileno(stdout), tbuf, nchars);
+ (void)signal(SIGINT, oldint);
+ (void)close(fd);
}
-
-
sigtype
- sigint()
+sigint()
{
- longjmp(motdinterrupt, 1);
+ longjmp(motdinterrupt, 1);
}
-
-
checknologin()
{
- register int fd, nchars;
- char tbuf[8192];
-
- if ((fd = open(NOLOGIN, O_RDONLY, 0)) >= 0) {
- while ((nchars = read(fd, tbuf, sizeof(tbuf))) > 0)
- (void)write(fileno(stdout), tbuf, nchars);
- sleepexit(0);
- }
-}
-
+ register int fd, nchars;
+ char tbuf[8192];
+ if ((fd = open(NOLOGIN, O_RDONLY, 0)) >= 0) {
+ while ((nchars = read(fd, tbuf, sizeof(tbuf))) > 0)
+ (void)write(fileno(stdout), tbuf, nchars);
+ sleepexit(0);
+ }
+}
dolastlog(quiet, tty)
- int quiet;
- char *tty;
+ int quiet;
+ char *tty;
{
- struct lastlog ll;
- int fd;
-
- if ((fd = open(LASTLOG, O_RDWR, 0)) >= 0) {
- (void)lseek(fd, (off_t)pwd->pw_uid * sizeof(ll), L_SET);
- if (!quiet) {
- if (read(fd, (char *)&ll, sizeof(ll)) == sizeof(ll) &&
- ll.ll_time != 0) {
- printf("Last login: %.*s ",
- 24-5, (char *)ctime(&ll.ll_time));
- if (*ll.ll_host != '\0')
- printf("from %.*s\n",
- sizeof(ll.ll_host), ll.ll_host);
+ struct lastlog ll;
+ int fd;
+
+ if ((fd = open(LASTLOG, O_RDWR, 0)) >= 0) {
+ (void)lseek(fd, (off_t)pwd->pw_uid * sizeof(ll), L_SET);
+ if (!quiet) {
+ if (read(fd, (char *)&ll, sizeof(ll)) == sizeof(ll) &&
+ ll.ll_time != 0) {
+ printf("Last login: %.*s ",
+ 24-5, (char *)ctime(&ll.ll_time));
+ if (*ll.ll_host != '\0')
+ printf("from %.*s\n",
+ sizeof(ll.ll_host), ll.ll_host);
+ else
+ printf("on %.*s\n",
+ sizeof(ll.ll_line), ll.ll_line);
+ }
+ (void)lseek(fd, (off_t)pwd->pw_uid * sizeof(ll), L_SET);
+ }
+ (void)time(&ll.ll_time);
+ (void) strncpy(ll.ll_line, tty, sizeof(ll.ll_line));
+ if (hostname)
+ (void) strncpy(ll.ll_host, hostname, sizeof(ll.ll_host));
else
- printf("on %.*s\n",
- sizeof(ll.ll_line), ll.ll_line);
- }
- (void)lseek(fd, (off_t)pwd->pw_uid * sizeof(ll), L_SET);
+ (void) bzero(ll.ll_host, sizeof(ll.ll_host));
+ (void)write(fd, (char *)&ll, sizeof(ll));
+ (void)close(fd);
}
- (void)time(&ll.ll_time);
- (void) strncpy(ll.ll_line, tty, sizeof(ll.ll_line));
- if (hostname)
- (void) strncpy(ll.ll_host, hostname, sizeof(ll.ll_host));
- else
- (void) bzero(ll.ll_host, sizeof(ll.ll_host));
- (void)write(fd, (char *)&ll, sizeof(ll));
- (void)close(fd);
- }
}
-
-
#undef UNKNOWN
#define UNKNOWN "su"
-char *stypeof(ttyid)
- char *ttyid;
+char *
+stypeof(ttyid)
+ char *ttyid;
{
#ifdef NOTTYENT
- return(UNKNOWN);
+ return(UNKNOWN);
#else
- struct ttyent *t;
-
- return(ttyid && (t = getttynam(ttyid)) ? t->ty_type : UNKNOWN);
+ struct ttyent *t;
+
+ return(ttyid && (t = getttynam(ttyid)) ? t->ty_type : UNKNOWN);
#endif
}
-
-
-getstr(buf, cnt, err)
- char *buf, *err;
- int cnt;
+doremotelogin(host)
+ char *host;
{
- char ch;
-
- do {
- if (read(0, &ch, sizeof(ch)) != sizeof(ch))
- exit(1);
- if (--cnt < 0) {
- fprintf(stderr, "%s too long\r\n", err);
- sleepexit(1);
- }
- *buf++ = ch;
- } while (ch);
+ static char lusername[UT_NAMESIZE+1];
+ char rusername[UT_NAMESIZE+1];
+
+ getstr(rusername, sizeof(rusername), "remuser");
+ getstr(lusername, sizeof(lusername), "locuser");
+ getstr(term, sizeof(term), "Terminal type");
+ username = lusername;
+ pwd = getpwnam(username);
+ if (pwd == NULL)
+ return(-1);
+ return(ruserok(host, (pwd->pw_uid == 0), rusername, username));
}
-
-
-doremotelogin()
+getstr(buf, cnt, err)
+ char *buf, *err;
+ int cnt;
{
- static char lusername[UT_NAMESIZE+1];
- char rusername[UT_NAMESIZE+1];
-
- getstr(rusername, sizeof(rusername), "remuser");
- getstr(lusername, sizeof(lusername), "locuser");
- if (username == NULL)
- username = lusername;
- getstr(term, sizeof(term), "Terminal type");
+ char ch;
+
+ do {
+ if (read(0, &ch, sizeof(ch)) != sizeof(ch))
+ exit(1);
+ if (--cnt < 0) {
+ fprintf(stderr, "%s too long\r\n", err);
+ sleepexit(1);
+ }
+ *buf++ = ch;
+ } while (ch);
}
-
-
char *speeds[] = {
- "0", "50", "75", "110", "134", "150", "200", "300", "600",
- "1200", "1800", "2400", "4800", "9600", "19200", "38400",
+ "0", "50", "75", "110", "134", "150", "200", "300", "600",
+ "1200", "1800", "2400", "4800", "9600", "19200", "38400",
};
#define NSPEEDS (sizeof(speeds) / sizeof(speeds[0]))
doremoteterm(tp)
- struct sgttyb *tp;
+ struct sgttyb *tp;
{
- register char *cp = index(term, '/'), **cpp;
- char *speed;
-
- if (cp) {
- *cp++ = '\0';
- speed = cp;
- cp = index(speed, '/');
- if (cp)
- *cp++ = '\0';
- for (cpp = speeds; cpp < &speeds[NSPEEDS]; cpp++)
- if (strcmp(*cpp, speed) == 0) {
- tp->sg_ispeed = tp->sg_ospeed = cpp-speeds;
- break;
- }
- }
- tp->sg_flags = ECHO|CRMOD|ANYP|XTABS;
+ register char *cp = index(term, '/'), **cpp;
+ char *speed;
+
+ if (cp) {
+ *cp++ = '\0';
+ speed = cp;
+ cp = index(speed, '/');
+ if (cp)
+ *cp++ = '\0';
+ for (cpp = speeds; cpp < &speeds[NSPEEDS]; cpp++)
+ if (strcmp(*cpp, speed) == 0) {
+ tp->sg_ispeed = tp->sg_ospeed = cpp-speeds;
+ break;
+ }
+ }
+ tp->sg_flags = ECHO|CRMOD|ANYP|XTABS;
}
-
-
sleepexit(eval)
- int eval;
-{
- sleep((u_int)5);
- exit(eval);
-}
-
-
-
-void setenv(var, value)
- char *var, *value;
+ int eval;
{
- char *env_str;
- int retval, str_size = strlen(var) + strlen(value) + strlen("=") + 1;
-
- env_str = (char *) malloc(str_size);
-
- strcpy(env_str, var);
- strcat(env_str, "=");
- strcat(env_str, value);
- env_str[str_size-1] = '\0';
-
- if (retval = putenv(env_str)) {
- syslog(LOG_ERR, "Not enough memory\n");
- exit(1);
- }
+ sleep((u_int)5);
+ exit(eval);
}
projects / krb5.git / commitdiff