int
main(int argc, char *argv[])
{
extern char **environ;
int first_sleep = 1, first_time = 1;
struct rlimit limit;
int rval;
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
openlog("getty", LOG_ODELAY|LOG_CONS|LOG_PID, LOG_AUTH);
gethostname(hostname, sizeof(hostname) - 1);
hostname[sizeof(hostname) - 1] = '\0';
if (hostname[0] == '\0')
strcpy(hostname, "Amnesiac");
/*
* Limit running time to deal with broken or dead lines.
*/
(void)signal(SIGXCPU, timeoverrun);
limit.rlim_max = RLIM_INFINITY;
limit.rlim_cur = GETTY_TIMEOUT;
(void)setrlimit(RLIMIT_CPU, &limit);
gettable("default", defent);
gendefaults();
tname = "default";
if (argc > 1)
tname = argv[1];
/*
* The following is a work around for vhangup interactions
* which cause great problems getting window systems started.
* If the tty line is "-", we do the old style getty presuming
* that the file descriptors are already set up for us.
* J. Gettys - MIT Project Athena.
*/
if (argc <= 2 || strcmp(argv[2], "-") == 0)
strcpy(ttyn, ttyname(STDIN_FILENO));
else {
strcpy(ttyn, dev);
strncat(ttyn, argv[2], sizeof(ttyn)-sizeof(dev));
if (strcmp(argv[0], "+") != 0) {
chown(ttyn, 0, 0);
chmod(ttyn, 0600);
revoke(ttyn);
/*
* Do the first scan through gettytab.
* Terminal mode parameters will be wrong until
* defttymode() called, but they're irrelevant for
* the initial setup of the terminal device.
*/
dogettytab();
/*
* Init or answer modem sequence has been specified.
*/
if (IC || AC) {
if (!opentty(ttyn, O_RDWR|O_NONBLOCK))
exit(1);
defttymode();
setttymode(1);
}
if (IC) {
if (getty_chat(IC, CT, DC) > 0) {
syslog(LOG_ERR, "modem init problem on %s", ttyn);
(void)tcsetattr(STDIN_FILENO, TCSANOW, &tmode);
exit(1);
}
}
if (AC) {
int i, rfds;
struct timeval to;
rfds = 1 << 0; /* FD_SET */
to.tv_sec = RT;
to.tv_usec = 0;
i = select(32, (fd_set*)&rfds, (fd_set*)NULL,
(fd_set*)NULL, RT ? &to : NULL);
if (i < 0) {
syslog(LOG_ERR, "select %s: %m", ttyn);
} else if (i == 0) {
syslog(LOG_NOTICE, "recycle tty %s", ttyn);
(void)tcsetattr(STDIN_FILENO, TCSANOW, &tmode);
exit(0); /* recycle for init */
}
i = getty_chat(AC, CT, DC);
if (i > 0) {
syslog(LOG_ERR, "modem answer problem on %s", ttyn);
(void)tcsetattr(STDIN_FILENO, TCSANOW, &tmode);
exit(1);
}
} else { /* maybe blocking open */
if (!opentty(ttyn, O_RDWR | (NC ? O_NONBLOCK : 0 )))
exit(1);
}
}
}
defttymode();
for (;;) {
/*
* if a delay was specified then sleep for that
* number of seconds before writing the initial prompt
*/
if (first_sleep && DE) {
sleep(DE);
/* remove any noise */
(void)tcflush(STDIN_FILENO, TCIOFLUSH);
}
first_sleep = 0;
setttymode(0);
if (AB) {
tname = autobaud();
dogettytab();
continue;
}
if (PS) {
tname = portselector();
dogettytab();
continue;
}
if (CL && *CL)
putpad(CL);
edithost(HE);
/* if this is the first time through this, and an
issue file has been given, then send it */
if (first_time && IF) {
int fd;
if ((fd = open(IF, O_RDONLY)) != -1) {
char * cp;
while ((cp = getline(fd)) != NULL) {
putf(cp);
}
close(fd);
}
}
first_time = 0;
if (IM && *IM && !(PL && PP))
putf(IM);
if (setjmp(timeout)) {
cfsetispeed(&tmode, B0);
cfsetospeed(&tmode, B0);
(void)tcsetattr(STDIN_FILENO, TCSANOW, &tmode);
exit(1);
}
if (TO) {
signal(SIGALRM, dingdong);
alarm(TO);
}
rval = 0;
if (AL) {
const char *p = AL;
char *q = name;
while (*p && q < &name[sizeof name - 1]) {
if (isupper(*p))
upper = 1;
else if (islower(*p))
lower = 1;
else if (isdigit(*p))
digit = 1;
*q++ = *p++;
}
} else if (!(PL && PP))
rval = getname();
if (rval == 2 || (PL && PP)) {
oflush();
alarm(0);
limit.rlim_max = RLIM_INFINITY;
limit.rlim_cur = RLIM_INFINITY;
(void)setrlimit(RLIMIT_CPU, &limit);
execle(PP, "ppplogin", ttyn, (char *) 0, env);
syslog(LOG_ERR, "%s: %m", PP);
exit(1);
} else if (rval || AL) {
int i;
oflush();
alarm(0);
signal(SIGALRM, SIG_DFL);
if (name[0] == '\0')
continue;
if (name[0] == '-') {
puts("user names may not start with '-'.");
continue;
}
if (!(upper || lower || digit)) {
if (AL) {
syslog(LOG_ERR,
"invalid auto-login name: %s", AL);
exit(1);
} else
continue;
}
set_flags(2);
if (crmod) {
tmode.c_iflag |= ICRNL;
tmode.c_oflag |= ONLCR;
}
#if REALLY_OLD_TTYS
if (upper || UC)
tmode.sg_flags |= LCASE;
if (lower || LC)
tmode.sg_flags &= ~LCASE;
#endif
if (tcsetattr(STDIN_FILENO, TCSANOW, &tmode) < 0) {
syslog(LOG_ERR, "tcsetattr %s: %m", ttyn);
exit(1);
}
signal(SIGINT, SIG_DFL);
for (i = 0; environ[i] != (char *)0; i++)
env[i] = environ[i];
makeenv(&env[i]);
limit.rlim_max = RLIM_INFINITY;
limit.rlim_cur = RLIM_INFINITY;
(void)setrlimit(RLIMIT_CPU, &limit);
execle(LO, "login", AL ? "-fp" : "-p", name,
(char *) 0, env);
syslog(LOG_ERR, "%s: %m", LO);
exit(1);
}
alarm(0);
signal(SIGALRM, SIG_DFL);
signal(SIGINT, SIG_IGN);
if (NX && *NX) {
tname = NX;
dogettytab();
}
}
}
int
main(int argc, char *argv[])
{
extern char **environ;
char *tname;
int repcnt = 0, failopenlogged = 0;
struct rlimit limit;
int rval;
signal(SIGINT, SIG_IGN);
/*
signal(SIGQUIT, SIG_DFL);
*/
openlog("getty", LOG_ODELAY|LOG_CONS|LOG_PID, LOG_AUTH);
gethostname(hostname, sizeof(hostname));
if (hostname[0] == '\0')
strlcpy(hostname, "Amnesiac", sizeof hostname);
uname(&kerninfo);
/*
* Limit running time to deal with broken or dead lines.
*/
(void)signal(SIGXCPU, timeoverrun);
limit.rlim_max = RLIM_INFINITY;
limit.rlim_cur = GETTY_TIMEOUT;
(void)setrlimit(RLIMIT_CPU, &limit);
/*
* The following is a work around for vhangup interactions
* which cause great problems getting window systems started.
* If the tty line is "-", we do the old style getty presuming
* that the file descriptors are already set up for us.
* J. Gettys - MIT Project Athena.
*/
if (argc <= 2 || strcmp(argv[2], "-") == 0) {
snprintf(ttyn, sizeof ttyn, "%s", ttyname(0));
} else {
int i;
snprintf(ttyn, sizeof ttyn, "%s%s", dev, argv[2]);
if (strcmp(argv[0], "+") != 0) {
chown(ttyn, 0, 0);
chmod(ttyn, 0600);
revoke(ttyn);
/*
* Delay the open so DTR stays down long enough to be detected.
*/
sleep(2);
while ((i = open(ttyn, O_RDWR)) == -1) {
if ((repcnt % 10 == 0) &&
(errno != ENXIO || !failopenlogged)) {
syslog(LOG_ERR, "%s: %m", ttyn);
closelog();
failopenlogged = 1;
}
repcnt++;
sleep(60);
}
login_tty(i);
}
}
/* Start with default tty settings */
if (tcgetattr(0, &tmode) < 0) {
syslog(LOG_ERR, "%s: %m", ttyn);
exit(1);
}
omode = tmode;
gettable("default", defent);
gendefaults();
tname = "default";
if (argc > 1)
tname = argv[1];
for (;;) {
int off;
gettable(tname, tabent);
if (OPset || EPset || APset)
APset++, OPset++, EPset++;
setdefaults();
off = 0;
(void)tcflush(0, TCIOFLUSH); /* clear out the crap */
ioctl(0, FIONBIO, &off); /* turn off non-blocking mode */
ioctl(0, FIOASYNC, &off); /* ditto for async mode */
if (IS)
cfsetispeed(&tmode, IS);
else if (SP)
cfsetispeed(&tmode, SP);
if (OS)
cfsetospeed(&tmode, OS);
else if (SP)
cfsetospeed(&tmode, SP);
setflags(0);
setchars();
if (tcsetattr(0, TCSANOW, &tmode) < 0) {
syslog(LOG_ERR, "%s: %m", ttyn);
exit(1);
}
if (AB) {
tname = autobaud();
continue;
}
if (PS) {
tname = portselector();
continue;
}
if (CL && *CL)
putpad(CL);
edithost(HE);
if (IM && *IM)
putf(IM);
if (TO) {
signal(SIGALRM, dingdong);
alarm(TO);
}
if ((rval = getname()) == 2) {
oflush();
alarm(0);
signal(SIGALRM, SIG_DFL);
execle(PP, "ppplogin", ttyn, (char *) 0, env);
syslog(LOG_ERR, "%s: %m", PP);
exit(1);
} else if (rval) {
int i;
oflush();
alarm(0);
signal(SIGALRM, SIG_DFL);
if (name[0] == '-') {
xputs("user names may not start with '-'.");
continue;
}
if (!(upper || lower || digit))
continue;
setflags(2);
if (crmod) {
tmode.c_iflag |= ICRNL;
tmode.c_oflag |= ONLCR;
}
if (upper || UC) {
tmode.c_iflag |= IUCLC;
tmode.c_oflag |= OLCUC;
tmode.c_lflag |= XCASE;
}
if (lower || LC) {
tmode.c_iflag &= ~IUCLC;
tmode.c_oflag &= ~OLCUC;
tmode.c_lflag &= ~XCASE;
}
if (tcsetattr(0, TCSANOW, &tmode) < 0) {
syslog(LOG_ERR, "%s: %m", ttyn);
exit(1);
}
signal(SIGINT, SIG_DFL);
for (i = 0; environ[i] != (char *)0; i++)
env[i] = environ[i];
makeenv(&env[i]);
limit.rlim_max = RLIM_INFINITY;
limit.rlim_cur = RLIM_INFINITY;
(void)setrlimit(RLIMIT_CPU, &limit);
execle(LO, "login", "-p", "--", name, (char *)0, env);
syslog(LOG_ERR, "%s: %m", LO);
exit(1);
}
alarm(0);
signal(SIGALRM, SIG_DFL);
signal(SIGINT, SIG_IGN);
if (NX && *NX)
tname = NX;
}
}
