/* process function for help_state=0 */
static void help_send_escape(int fd, char c) {
struct termios pts; /* termios settings on port */
in_escape = 0;
help_state = 0;
switch (c) {
case 'x':
/* restore termios settings and exit */
write(STDOUT_FILENO, "\n", 1);
cleanup_termios(0);
break;
case 'q': /* quit help */
break;
case 'l': /* log on/off */
if (flog == 0) { /* open log file */
open_logFile(log_file);
}
else { /* close log file */
close_logFile();
}
break;
case 's': /* script active/inactive */
script_init(scr_name);
script = (script)? 0: 1;
break;
case 'b': /* send break */
/* send a break */
tcsendbreak(fd, 0);
break;
case 't': /* set terminal */
help_state = 1;
help_terminal();
in_escape = 1;
break;
case '~': /* display it again */
help_escape();
break;
default:
/* pass the character through */
/* "C-\ C-\" sends "C-\" */
write(fd, &c, 1);
break;
}
if (in_escape == 0)
help_done();
return;
}
/* handle escape characters, writing to output */
void cook_buf(int fd, char *buf, int num) {
int current = 0;
if (in_escape) {
/* cook_buf last called with an incomplete escape sequence */
switch (help_state) {
case 0:
help_send_escape(fd, buf[0]);
break;
case 1:
help_set_terminal(fd, buf[0]);
break;
default:
help_set_speed(fd, buf[0]);
}
num--; /* advance to the next character in the buffer */
buf++;
}
while (current < num) { /* big while loop, to process all the charactes in buffer */
/* look for the next escape character '~' */
while ((current < num) && (buf[current] != 0x7e)) current++;
/* and write the sequence before esc char to the comm port */
if (current) {
DEBUG_DUMP_MEMORY(buf,current);
const ssize_t written = write (fd, buf, current);
if (written == -1) {
const int error = errno;
ERROR_MSG("error writting to device %d (%m)",error);
} else if (written != current) {
ERROR_MSG("error writting to device only %d bytes written",written);
}
}
if (current < num) { /* process an escape sequence */
/* found an escape character */
if (help_state == 0) {
help_escape();
}
current++;
if (current >= num) {
/* interpret first character of next sequence */
in_escape = 1;
return;
}
switch (help_state) {
case 0:
help_send_escape(fd, buf[current]);
break;
case 1:
help_set_terminal(fd, buf[current]);
break;
default:
help_set_speed(fd, buf[current]);
} /* end switch */
current++;
if (current >= num)
return;
} /* if - end of processing escape sequence */
num -= current;
buf += current;
current = 0;
} /* while - end of processing all the charactes in the buffer */
return;
}
/* handle escape characters, writing to output */
void cook_buf(struct ios_ops *ios, unsigned char *buf, int num)
{
int current = 0;
if (in_escape) {
/* cook_buf last called with an incomplete escape sequence */
switch (help_state) {
case 0:
help_send_escape(ios, buf[0]);
break;
case 1:
help_set_terminal(ios, buf[0]);
break;
default:
help_set_speed(ios, buf[0]);
}
num--; /* advance to the next character in the buffer */
buf++;
}
while (current < num) { /* big while loop, to process all the charactes in buffer */
/* look for the next escape character '~' */
while ((current < num) && (buf[current] != 28))
current++;
/* and write the sequence befor esc char to the comm port */
if (current)
{
if (in_echo)
{
write(STDOUT_FILENO, buf, current); /* echo */
}
if (!in_line)
write(ios->fd, buf, current);
else
writeline(ios->fd, buf, current);
}
if (current < num) { /* process an escape sequence */
/* flush buffers */
fflush(stdout);
if (in_line)
flushline(ios->fd);
/* found an escape character */
if (help_state == 0)
help_escape();
current++;
if (current >= num) {
/* interpret first character of next sequence */
in_escape = 1;
return;
}
switch (help_state) {
case 0:
help_send_escape(ios, buf[current]);
break;
case 1:
help_set_terminal(ios, buf[current]);
break;
default:
help_set_speed(ios, buf[current]);
} /* end switch */
current++;
if (current >= num)
return;
} /* if - end of processing escape sequence */
num -= current;
buf += current;
current = 0;
} /* while - end of processing all the charactes in the buffer */
return;
}
/* process function for help_state=0 */
static void help_send_escape(struct ios_ops *ios, char c)
{
struct winsize win;
char buf[100];
int sz;
in_escape = 0;
help_state = 0;
switch (c) {
case 'q': /* quit help */
case 'x':
/* restore termios settings and exit */
write(STDOUT_FILENO, "\n", 1);
microcom_exit(0);
break;
case 'l': /* log on/off */
dolog = (dolog == 0) ? 1 : 0;
if (dolog) { /* open log file */
if ((flog = fopen("microcom.log", "a")) == (FILE *) 0) {
write(STDOUT_FILENO,
"Cannot open microcom.log \n", 26);
dolog = 0;
}
} else { /* cloase log file */
fflush(flog);
fclose(flog);
}
break;
case 'b': /* send break */
/* send a break */
tcsendbreak(ios->fd, 0);
break;
case 't': /* set terminal */
help_state = 1;
help_terminal();
in_escape = 1;
break;
case 'o': /* echo mode */
in_echo = !in_echo;
if (in_echo)
printf("echo mode ON\n");
else
printf("echo mode OFF\n");
break;
case 'i': /* input line mode */
in_line = !in_line;
if (in_line)
printf("line mode ON\n");
else
printf("line mode OFF\n");
break;
case 'h': /* output hex mode */
out_hex = !out_hex;
if (out_hex)
printf("hex mode ON\n");
else
printf("hex mode OFF\n");
break;
case '~': /* display it again */
help_escape();
break;
case 'w':
if(ioctl(0, TIOCGWINSZ, &win))
break;
sz = sprintf(buf, "stty rows %d cols %d\n", win.ws_row, win.ws_col);
write(ios->fd, &buf, sz);
break;
case 'e':
break;
default:
printf("unknown command '%c'\n",c);
break;
}
if (in_escape == 0)
help_done();
return;
}
