int main(int argc, char *argv[])
{
FILE *fp;
char *pFileName;
tty_mode(0);
set_tty_mode();
if (argc == 1)
{
do_more(stdin);
}
else
{
while(--argc > 0)
{
pFileName = *++argv;
if ((fp = fopen(pFileName, "r")) > 0)
{
do_more(fp);
}
else
{
fprintf(stderr, "Open file %s error, errno = %d\n", pFileName, errno);
}
}
}
tty_mode(1);
return 0;
}
static int modem_send_at_command(const char *command, char *buff, size_t size)
{
int fd;
int ret;
ssize_t rwlen;
char *p;
struct termios attr;
fd = open(MODEM_TTY_DEVICE, O_RDWR | O_SYNC | O_TRUNC | O_NOCTTY);
if (fd < 0)
{
print_error("open device \"%s\" failed", MODEM_TTY_DEVICE);
return fd;
}
ret = set_tty_mode(fd, 4, &attr);
if (ret < 0)
{
error_msg("set_tty_mode");
goto out_close_fd;
}
p = text_cat3(buff, 2, command, "\r\n");
rwlen = write(fd, buff, p - buff - 1);
if (rwlen < 0)
{
print_error("write command \"%s\" failed", command);
ret = rwlen;
goto out_restore_tty;
}
ret = read(fd, buff, size);
out_restore_tty:
restore_tty_attr(fd, &attr);
out_close_fd:
close(fd);
return ret;
}
int open_serial_obj(obj_t *serial)
{
/* (Re)opens the specified 'serial' obj.
* Returns 0 if the serial console is successfully opened; o/w, returns -1.
*
* FIXME: Check to see if "downed" serial consoles are ever resurrected.
*/
int fd;
int flags;
struct termios tty;
assert(serial != NULL);
assert(is_serial_obj(serial));
if (serial->fd >= 0) {
write_notify_msg(serial, LOG_INFO,
"Console [%s] disconnected from \"%s\"",
serial->name, serial->aux.serial.dev);
set_tty_mode(&serial->aux.serial.tty, serial->fd);
if (close(serial->fd) < 0) /* log err and continue */
log_msg(LOG_WARNING, "Unable to close [%s] device \"%s\": %s",
serial->name, serial->aux.serial.dev, strerror(errno));
serial->fd = -1;
}
flags = O_RDWR | O_NONBLOCK | O_NOCTTY;
if ((fd = open(serial->aux.serial.dev, flags)) < 0) {
log_msg(LOG_WARNING, "Unable to open [%s] device \"%s\": %s",
serial->name, serial->aux.serial.dev, strerror(errno));
goto err;
}
if (get_write_lock(fd) < 0) {
log_msg(LOG_WARNING, "Unable to lock [%s] device \"%s\"",
serial->name, serial->aux.serial.dev);
goto err;
}
if (!isatty(fd)) {
log_msg(LOG_WARNING, "[%s] device \"%s\" not a terminal",
serial->name, serial->aux.serial.dev);
goto err;
}
/* According to the UNIX Programming FAQ v1.37
* <http://www.faqs.org/faqs/unix-faq/programmer/faq/>
* (Section 3.6: How to Handle a Serial Port or Modem),
* systems seem to differ as to whether a nonblocking
* open on a tty will affect subsequent read()s.
* Play it safe and be explicit!
*/
set_fd_nonblocking(fd);
set_fd_closed_on_exec(fd);
/*
* Note that while the initial state of the console dev's termios
* are saved, the 'opts' settings are not. This is because the
* settings do not change until the obj is destroyed, at which time
* the termios is reverted back to its initial state.
*
* FIXME: Re-evaluate this thinking since a SIGHUP should attempt
* to resurrect "downed" serial objs.
*/
get_tty_mode(&serial->aux.serial.tty, fd);
get_tty_raw(&tty, fd);
set_serial_opts(&tty, serial, &serial->aux.serial.opts);
set_tty_mode(&tty, fd);
serial->fd = fd;
serial->gotEOF = 0;
/*
* Success!
*/
write_notify_msg(serial, LOG_INFO, "Console [%s] connected to \"%s\"",
serial->name, serial->aux.serial.dev);
DPRINTF((9, "Opened [%s] serial: fd=%d dev=%s bps=%d.\n",
serial->name, serial->fd, serial->aux.serial.dev,
bps_to_int(serial->aux.serial.opts.bps)));
return(0);
err:
if (fd >= 0) {
close(fd); /* ignore errors */
}
return(-1);
}
