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#!/usr/bin/env python
import asyncio
import json
import re
import os
import glob
class Program:
command_seq = 0
reader = None
writer = None
read_buffer = ""
message_queue = asyncio.Queue()
reply_queue = asyncio.Queue()
decoder = json.JSONDecoder()
tasks = []
async def read_message(self):
while True:
try:
result, index = self.decoder.raw_decode(self.read_buffer)
self.read_buffer = self.read_buffer[index:].lstrip()
return result
except json.JSONDecodeError:
data = await self.reader.read(4096)
self.read_buffer += data.decode('utf-8')
async def send_command(self, method, params = None):
cmd = {
"method": method,
"id": self.command_seq,
}
if not params is None:
cmd['params'] = params
self.command_seq += 1
self.writer.write(json.dumps(cmd).encode())
await self.writer.drain()
reply = await self.reply_queue.get()
self.reply_queue.task_done()
return reply['code'] == 0
async def attach(self, display):
return await self.send_command('attach', {'display': display})
async def attach_any(self):
for path in glob.iglob('/run/user/*/wayland-*'):
if path.endswith('.lock'):
continue
if await self.attach(path):
return True
return False
async def handle_detached(self):
while not await self.attach_any():
await asyncio.sleep(1.0)
async def process_message(self, message):
method = message['method']
if (method == 'detached'):
await self.handle_detached()
async def message_processor(self):
while True:
message = await self.read_message()
if 'method' in message:
await self.message_queue.put(message)
elif 'code' in message:
await self.reply_queue.put(message)
async def main(self):
self.reader, self.writer = await asyncio.open_unix_connection("/tmp/wayvncctl-0")
self.tasks.append(asyncio.create_task(self.message_processor()))
await self.attach_any()
await self.send_command("event-receive")
while True:
message = await self.message_queue.get()
await self.process_message(message)
prog = Program()
asyncio.run(prog.main())
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