/* Initialise a key tree from the table. */
void
tty_keys_build(struct tty *tty)
{
const struct tty_default_key_raw *tdkr;
const struct tty_default_key_code *tdkc;
u_int i;
const char *s;
if (tty->key_tree != NULL)
tty_keys_free(tty);
tty->key_tree = NULL;
for (i = 0; i < nitems(tty_default_raw_keys); i++) {
tdkr = &tty_default_raw_keys[i];
s = tdkr->string;
if (*s != '\0')
tty_keys_add(tty, s, tdkr->key);
}
for (i = 0; i < nitems(tty_default_code_keys); i++) {
tdkc = &tty_default_code_keys[i];
s = tty_term_string(tty->term, tdkc->code);
if (*s != '\0')
tty_keys_add(tty, s, tdkc->key);
}
}
void
tty_stop_tty(struct tty *tty)
{
struct winsize ws;
/*
* Be flexible about error handling and try not kill the server just
* because the fd is invalid. Things like ssh -t can easily leave us
* with a dead tty.
*/
if (ioctl(tty->fd, TIOCGWINSZ, &ws) == -1)
return;
if (tcsetattr(tty->fd, TCSANOW, &tty->tio) == -1)
return;
tty_raw(tty, tty_term_string2(tty->term, TTYC_CSR, 0, ws.ws_row - 1));
tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS));
tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0));
tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX));
tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP));
tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR));
tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM));
if (tty_term_has(tty->term, TTYC_KMOUS))
tty_raw(tty, "\033[?1000l");
}
void
tty_stop_tty(struct tty *tty)
{
struct winsize ws;
if (!(tty->flags & TTY_STARTED))
return;
tty->flags &= ~TTY_STARTED;
bufferevent_disable(tty->event, EV_READ|EV_WRITE);
/*
* Be flexible about error handling and try not kill the server just
* because the fd is invalid. Things like ssh -t can easily leave us
* with a dead tty.
*/
if (ioctl(tty->fd, TIOCGWINSZ, &ws) == -1)
return;
if (tcsetattr(tty->fd, TCSANOW, &tty->tio) == -1)
return;
setblocking(tty->fd, 1);
tty_raw(tty, tty_term_string2(tty->term, TTYC_CSR, 0, ws.ws_row - 1));
if (tty_use_acs(tty))
tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS));
tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0));
tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX));
tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR));
if (tty_term_has(tty->term, TTYC_CS1) && tty->cstyle != 0) {
if (tty_term_has(tty->term, TTYC_CSR1))
tty_raw(tty, tty_term_string(tty->term, TTYC_CSR1));
else
tty_raw(tty, tty_term_string1(tty->term, TTYC_CS1, 0));
}
tty_raw(tty, tty_term_string(tty->term, TTYC_CR));
tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM));
if (tty_term_has(tty->term, TTYC_KMOUS))
tty_raw(tty, "\033[?1000l");
tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP));
if (tty->xterm_version > 270)
tty_raw(tty, "\033[61;1\"p");
}
void
tty_fill_acs(struct tty *tty)
{
const char *ptr;
memset(tty->acs, 0, sizeof tty->acs);
if (!tty_term_has(tty->term, TTYC_ACSC))
return;
ptr = tty_term_string(tty->term, TTYC_ACSC);
if (strlen(ptr) % 2 != 0)
return;
for (; *ptr != '\0'; ptr += 2)
tty->acs[(u_char) ptr[0]] = ptr[1];
}
/* Initialise a key tree from the table. */
void
tty_keys_init(struct tty *tty)
{
const struct tty_key_ent *tke;
u_int i;
const char *s;
tty->key_tree = NULL;
for (i = 0; i < nitems(tty_keys); i++) {
tke = &tty_keys[i];
if (tke->flags & TTYKEY_RAW)
s = tke->string;
else {
if (!tty_term_has(tty->term, tke->code))
continue;
s = tty_term_string(tty->term, tke->code);
}
if (s[0] != '\033' || s[1] == '\0')
continue;
tty_keys_add(tty, s + 1, tke->key);
}
}
void
tty_stop_tty(struct tty *tty)
{
struct winsize ws;
int mode;
if (!(tty->flags & TTY_STARTED))
return;
tty->flags &= ~TTY_STARTED;
bufferevent_disable(tty->event, EV_READ|EV_WRITE);
/*
* Be flexible about error handling and try not kill the server just
* because the fd is invalid. Things like ssh -t can easily leave us
* with a dead tty.
*/
if (ioctl(tty->fd, TIOCGWINSZ, &ws) == -1)
return;
if (tcsetattr(tty->fd, TCSANOW, &tty->tio) == -1)
return;
tty_raw(tty, tty_term_string2(tty->term, TTYC_CSR, 0, ws.ws_row - 1));
tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS));
tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0));
tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX));
tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR));
tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM));
if (tty_term_has(tty->term, TTYC_KMOUS))
tty_raw(tty, "\033[?1000l");
tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP));
if ((mode = fcntl(tty->fd, F_GETFL)) != -1)
fcntl(tty->fd, F_SETFL, mode & ~O_NONBLOCK);
}
void
tty_putcode(struct tty *tty, enum tty_code_code code)
{
tty_puts(tty, tty_term_string(tty->term, code));
}
void
tty_detect_utf8(struct tty *tty)
{
struct pollfd pfd;
char buf[7];
size_t len;
ssize_t n;
int nfds;
struct termios tio, old_tio;
#ifdef TIOCFLUSH
int what;
#endif
if (tty->flags & TTY_UTF8)
return;
/*
* If the terminal looks reasonably likely to support this, try to
* write a three-byte UTF-8 wide character to the terminal, then read
* the cursor position.
*
* XXX This entire function is a hack.
*/
/* Check if the terminal looks sort of vt100. */
if (strstr(tty_term_string(tty->term, TTYC_CLEAR), "[2J") == NULL ||
strstr(tty_term_string(tty->term, TTYC_CUP), "H") == NULL)
return;
if (tcgetattr(tty->fd, &old_tio) != 0)
fatal("tcgetattr failed");
cfmakeraw(&tio);
if (tcsetattr(tty->fd, TCSANOW, &tio) != 0)
fatal("tcsetattr failed");
#ifdef TIOCFLUSH
what = 0;
if (ioctl(tty->fd, TIOCFLUSH, &what) != 0)
fatal("ioctl(TIOCFLUSH)");
#endif
#define UTF8_TEST_DATA "\033[H\357\277\246\033[6n"
if (write(tty->fd, UTF8_TEST_DATA, (sizeof UTF8_TEST_DATA) - 1) == -1)
fatal("write failed");
#undef UTF8_TEST_DATA
len = 0;
for (;;) {
pfd.fd = tty->fd;
pfd.events = POLLIN;
nfds = poll(&pfd, 1, 500);
if (nfds == -1) {
if (errno == EAGAIN || errno == EINTR)
continue;
fatal("poll failed");
}
if (nfds == 0)
break;
#ifdef HAVE_POLL
if (pfd.revents & (POLLERR|POLLNVAL|POLLHUP))
break;
#endif
if (!(pfd.revents & POLLIN))
continue;
if ((n = read(tty->fd, buf + len, 1)) != 1)
break;
buf[++len] = '\0';
if (len == (sizeof buf) - 1) {
if (strcmp(buf, "\033[1;3R") == 0)
tty->flags |= TTY_UTF8;
break;
}
}
if (tcsetattr(tty->fd, TCSANOW, &old_tio) != 0)
fatal("tcsetattr failed");
}
