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input-over-ssh/forward.py

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Python
Executable File

#!/usr/bin/env python3
# input-over-ssh: Mouse and keyboard forwarding over SSH
# Copyright © 2019 Lee Yingtong Li (RunasSudo)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
MOUSEHOLD_X = 1366//2
MOUSEHOLD_Y = 728//2
MOUSEHOLD_W = 0
MOUSEHOLD_H = 0
DEVICE_MOUSE = 'Logitech USB Optical Mouse'
DEVICE_KEYBOARD = 'AT Translated Set 2 keyboard'
import asyncio
import re
import subprocess
import sys
import time
import tkinter
if MOUSEHOLD_W > 0:
root = tkinter.Tk()
root.geometry('{}x{}+{}+{}'.format(MOUSEHOLD_W, MOUSEHOLD_H, MOUSEHOLD_X - MOUSEHOLD_W//2, MOUSEHOLD_Y - MOUSEHOLD_H//2))
root.update()
async def mousemove():
last_mousemove = time.time()
while True:
p = await asyncio.create_subprocess_exec('xdotool', 'getmouselocation', stdout=subprocess.PIPE)
stdout, _ = await p.communicate()
result = {x[:x.index(':')]: int(x[x.index(':')+1:]) for x in stdout.decode('utf-8').strip().split(' ')}
dx, dy = result['x'] - MOUSEHOLD_X, result['y'] - MOUSEHOLD_Y
if dx != 0 or dy != 0:
print(dx, dy, file=sys.stderr)
print('DISPLAY=:0 xdotool mousemove_relative -- {} {}'.format(dx, dy))
p = await asyncio.create_subprocess_exec('xdotool', 'mousemove', str(MOUSEHOLD_X), str(MOUSEHOLD_Y))
await p.wait()
wait_s = (last_mousemove + 1/30) - time.time()
last_mousemove = time.time()
if wait_s > 0:
await asyncio.sleep(wait_s)
async def mouseinp():
# Get mouse device
p = await asyncio.create_subprocess_exec('xinput', 'list', stdout=subprocess.PIPE)
stdout, _ = await p.communicate()
device = re.search(DEVICE_MOUSE + '.*?id=([0-9]+)', stdout.decode('utf-8')).group(1)
print('Mouse device {}'.format(device), file=sys.stderr)
p_test = await asyncio.create_subprocess_exec('xinput', 'test', device, stdout=subprocess.PIPE)
while True:
line = (await p_test.stdout.readline()).decode('utf-8').strip()
if line.startswith('button press'):
print(line, file=sys.stderr)
button = line.split()[-1]
print('DISPLAY=:0 xdotool mousedown {}'.format(button))
elif line.startswith('button release'):
print(line, file=sys.stderr)
button = line.split()[-1]
print('DISPLAY=:0 xdotool mouseup {}'.format(button))
async def keyboardinp():
is_ctrl = False # 37
# Get keyboard device
p = await asyncio.create_subprocess_exec('xinput', 'list', stdout=subprocess.PIPE)
stdout, _ = await p.communicate()
device = re.search(DEVICE_KEYBOARD + '.*?id=([0-9]+)', stdout.decode('utf-8')).group(1)
print('Keyboard device {}'.format(device), file=sys.stderr)
p_test = await asyncio.create_subprocess_exec('xinput', 'test', device, stdout=subprocess.PIPE)
while True:
line = (await p_test.stdout.readline()).decode('utf-8').strip()
if line.startswith('key press'):
print(line, file=sys.stderr)
button = line.split()[-1]
if button == '37':
is_ctrl = True
if button == '24' and is_ctrl: # Ctrl+Q
print('DISPLAY=:0 xdotool keyup 37') # Release Ctrl
sys.exit(0)
return
print('DISPLAY=:0 xdotool keydown {}'.format(button))
elif line.startswith('key release'):
print(line, file=sys.stderr)
button = line.split()[-1]
if button == '37':
is_ctrl = False
print('DISPLAY=:0 xdotool keyup {}'.format(button))
async def main():
tasks = []
tasks.append(asyncio.create_task(mousemove()))
tasks.append(asyncio.create_task(mouseinp()))
tasks.append(asyncio.create_task(keyboardinp()))
await asyncio.gather(*tasks)
asyncio.run(main())