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/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "uv.h"
#include "internal.h"
#include <assert.h>
#include <unistd.h>
#include <termios.h>
#include <errno.h>
#include <sys/ioctl.h>
static int orig_termios_fd = -1;
static struct termios orig_termios;
int uv_tty_init(uv_loop_t* loop, uv_tty_t* tty, int fd, int readable) {
uv__stream_init(loop, (uv_stream_t*)tty, UV_TTY);
if (readable) {
uv__nonblock(fd, 1);
uv__stream_open((uv_stream_t*)tty, fd, UV_READABLE);
} else {
/* Note: writable tty we set to blocking mode. */
uv__stream_open((uv_stream_t*)tty, fd, UV_WRITABLE);
tty->blocking = 1;
}
loop->counters.tty_init++;
tty->mode = 0;
return 0;
}
int uv_tty_set_mode(uv_tty_t* tty, int mode) {
int fd = tty->fd;
struct termios raw;
if (mode && tty->mode == 0) {
/* on */
if (tcgetattr(fd, &tty->orig_termios)) {
goto fatal;
}
/* This is used for uv_tty_reset_mode() */
if (orig_termios_fd == -1) {
orig_termios = tty->orig_termios;
orig_termios_fd = fd;
}
raw = tty->orig_termios;
raw.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
raw.c_oflag |= (ONLCR);
raw.c_cflag |= (CS8);
raw.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
raw.c_cc[VMIN] = 1;
raw.c_cc[VTIME] = 0;
/* Put terminal in raw mode after draining */
if (tcsetattr(fd, TCSADRAIN, &raw)) {
goto fatal;
}
tty->mode = 1;
return 0;
} else if (mode == 0 && tty->mode) {
/* off */
/* Put terminal in original mode after flushing */
if (tcsetattr(fd, TCSAFLUSH, &tty->orig_termios)) {
goto fatal;
}
tty->mode = 0;
return 0;
}
fatal:
uv__set_sys_error(tty->loop, errno);
return -1;
}
int uv_tty_get_winsize(uv_tty_t* tty, int* width, int* height) {
struct winsize ws;
if (ioctl(tty->fd, TIOCGWINSZ, &ws) < 0) {
uv__set_sys_error(tty->loop, errno);
return -1;
}
*width = ws.ws_col;
*height = ws.ws_row;
return 0;
}
uv_handle_type uv_guess_handle(uv_file file) {
struct stat s;
if (file < 0) {
return UV_UNKNOWN_HANDLE;
}
if (isatty(file)) {
return UV_TTY;
}
if (fstat(file, &s)) {
return UV_UNKNOWN_HANDLE;
}
if (!S_ISSOCK(s.st_mode) && !S_ISFIFO(s.st_mode)) {
return UV_FILE;
}
return UV_NAMED_PIPE;
}
void uv_tty_reset_mode() {
if (orig_termios_fd >= 0) {
tcsetattr(orig_termios_fd, TCSANOW, &orig_termios);
}
}
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