void mainshell(void)
{
char *buff;
t_env *env;
buff = NULL;
env = makeenv();
prompt(env);
while (g_n_l(1, &buff))
{
split_operator(buff, &env);
}
}
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;
}
}
extern void exec(List *s, bool parent) {
char **av, **ev = NULL;
int pid, stat;
builtin_t *b;
char *path = NULL;
bool didfork, returning, saw_exec, saw_builtin;
av = list2array(s, dashex);
saw_builtin = saw_exec = FALSE;
do {
if (*av == NULL || isabsolute(*av))
b = NULL;
else if (!saw_builtin && fnlookup(*av) != NULL)
b = funcall;
else
b = isbuiltin(*av);
/*
a builtin applies only to the immmediately following
command, e.g., builtin exec echo hi
*/
saw_builtin = FALSE;
if (b == b_exec) {
av++;
saw_exec = TRUE;
parent = FALSE;
} else if (b == b_builtin) {
av++;
saw_builtin = TRUE;
}
} while (b == b_exec || b == b_builtin);
if (*av == NULL && saw_exec) { /* do redirs and return on a null exec */
doredirs();
return;
}
/* force an exit on exec with any rc_error, but not for null commands as above */
if (saw_exec)
rc_pid = -1;
if (b == NULL) {
path = which(*av, TRUE);
if (path == NULL && *av != NULL) { /* perform null commands for redirections */
set(FALSE);
redirq = NULL;
if (parent)
return;
rc_exit(1);
}
ev = makeenv(); /* environment only needs to be built for execve() */
}
/*
If parent & the redirq is nonnull, builtin or not it has to fork.
If the fifoq is nonnull, then it must be emptied at the end so we
must fork no matter what.
*/
if ((parent && (b == NULL || redirq != NULL)) || outstanding_cmdarg()) {
pid = rc_fork();
didfork = TRUE;
} else {
pid = 0;
didfork = FALSE;
}
returning = (!didfork && parent);
switch (pid) {
case -1:
uerror("fork");
rc_error(NULL);
/* NOTREACHED */
case 0:
if (!returning)
setsigdefaults(FALSE);
pop_cmdarg(FALSE);
doredirs();
/* null commands performed for redirections */
if (*av == NULL || b != NULL) {
if (b != NULL)
(*b)(av);
if (returning)
return;
rc_exit(getstatus());
}
execve(path, (char * const *) av, (char * const *) ev);
uerror(*av);
rc_exit(1);
/* NOTREACHED */
default:
redirq = NULL;
rc_wait4(pid, &stat, TRUE);
setstatus(-1, stat);
if ((stat & 0xff) == 0)
nl_on_intr = FALSE;
SIGCHK;
nl_on_intr = TRUE;
pop_cmdarg(TRUE);
}
}
